diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
index aec1532d6..937933b68 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
@@ -15,10 +15,7 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
                 .Select(l => new Response(
                     l.Id,
                     l.Iso6391,
-                    l.Name,
-                    l.FilterListLanguages
-                        .OrderBy(fl => fl.FilterListId)
-                        .Select(fl => fl.FilterListId)
+                    l.Name
                 ))
                 .TagWith(nameof(GetLanguages))
                 .ToListAsync(ct);
@@ -28,6 +25,5 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
     /// <param name="Id" example="37">The identifier.</param>
     /// <param name="Iso6391" example="en">The unique ISO 639-1 code.</param>
     /// <param name="Name" example="English">The unique ISO name.</param>
-    /// <param name="FilterListIds" example="[ 114, 141 ]">The identifiers of the FilterLists targeted by this Language.</param>
-    public sealed record Response(short Id, string Iso6391, string Name, IEnumerable<int> FilterListIds);
+    public sealed record Response(short Id, string Iso6391, string Name);
 }
\ No newline at end of file
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
index 2252d03cc..a9ed959b6 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
@@ -18,10 +18,7 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
                     l.Url,
                     l.PermitsModification,
                     l.PermitsDistribution,
-                    l.PermitsCommercialUse,
-                    l.FilterLists
-                        .OrderBy(f => f.Id)
-                        .Select(f => f.Id)
+                    l.PermitsCommercialUse
                 ))
                 .TagWith(nameof(GetLicenses))
                 .ToListAsync(ct);
@@ -34,13 +31,11 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
     /// <param name="PermitsModification" example="false">If the License permits modification.</param>
     /// <param name="PermitsDistribution" example="false">If the License permits distribution.</param>
     /// <param name="PermitsCommercialUse" example="false">If the License permits commercial use.</param>
-    /// <param name="FilterListIds" example="[ 6, 31 ]">The identifiers of the FilterLists released under this License.</param>
     public sealed record Response(
         int Id,
         string Name,
         Uri? Url,
         bool PermitsModification,
         bool PermitsDistribution,
-        bool PermitsCommercialUse,
-        IEnumerable<int> FilterListIds);
+        bool PermitsCommercialUse);
 }
\ No newline at end of file
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
index b90178c02..8137bef0a 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
@@ -17,10 +17,7 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
                     m.Name,
                     m.Url,
                     m.EmailAddress,
-                    m.TwitterHandle,
-                    m.FilterListMaintainers
-                        .OrderBy(fm => fm.FilterListId)
-                        .Select(fm => fm.FilterListId)
+                    m.TwitterHandle
                 ))
                 .TagWith(nameof(GetMaintainers))
                 .ToListAsync(ct);
@@ -32,12 +29,10 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
     /// <param name="Url" example="https://easylist.to/">The URL of the home page.</param>
     /// <param name="EmailAddress" example="null">The email address.</param>
     /// <param name="TwitterHandle" example="null">The Twitter handle.</param>
-    /// <param name="FilterListIds" example="[ 11, 13, 301 ]">The identifiers of the FilterLists maintained by this Maintainer.</param>
     public sealed record Response(
         int Id,
         string Name,
         Uri? Url,
         string? EmailAddress,
-        string? TwitterHandle,
-        IEnumerable<int> FilterListIds);
+        string? TwitterHandle);
 }
\ No newline at end of file
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
index daefa2f0c..9d43e9e7d 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
@@ -17,13 +17,7 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
                     s.Id,
                     s.Name,
                     s.Description,
-                    s.Url,
-                    s.FilterListSyntaxes
-                        .OrderBy(fs => fs.FilterListId)
-                        .Select(fs => fs.FilterListId),
-                    s.SoftwareSyntaxes
-                        .OrderBy(ss => ss.SoftwareId)
-                        .Select(ss => ss.SoftwareId)
+                    s.Url
                 ))
                 .TagWith(nameof(GetSyntaxes))
                 .ToListAsync(ct);
@@ -34,13 +28,9 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
     /// <param name="Name" example="Adblock Plus">The unique name.</param>
     /// <param name="Description" example="null">The description.</param>
     /// <param name="Url" example="https://adblockplus.org/filters">The URL of the home page.</param>
-    /// <param name="FilterListIds" example="[ 2, 6, 11 ]">The identifiers of the FilterLists implementing this Syntax.</param>
-    /// <param name="SoftwareIds" example="[ 1, 2, 3 ]">The identifiers of the Software that supports this Syntax.</param>
     public sealed record Response(
         short Id,
         string Name,
         string? Description,
-        Uri? Url,
-        IEnumerable<int> FilterListIds,
-        IEnumerable<short> SoftwareIds);
+        Uri? Url);
 }
\ No newline at end of file
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
index 4b163f1d2..b66193a3e 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
@@ -16,10 +16,7 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
                 (
                     t.Id,
                     t.Name,
-                    t.Description,
-                    t.FilterListTags
-                        .OrderBy(flt => flt.FilterListId)
-                        .Select(flt => flt.FilterListId)
+                    t.Description
                 ))
                 .TagWith(nameof(GetTags))
                 .ToListAsync(ct);
@@ -29,6 +26,5 @@ public async Task<List<Response>> ExecuteAsync(CancellationToken ct)
     /// <param name="Id" example="2">The identifier.</param>
     /// <param name="Name" example="ads">The unique name.</param>
     /// <param name="Description" example="Blocks advertisements">The description.</param>
-    /// <param name="FilterListIds" example="[ 1, 3, 6 ]">The identifiers of the FilterLists to which this Tag is applied.</param>
-    public sealed record Response(int Id, string Name, string? Description, IEnumerable<int> FilterListIds);
+    public sealed record Response(int Id, string Name, string? Description);
 }
\ No newline at end of file
diff --git a/web/src/interfaces/Language.ts b/web/src/interfaces/Language.ts
index 1f02265f2..e5ef4972c 100644
--- a/web/src/interfaces/Language.ts
+++ b/web/src/interfaces/Language.ts
@@ -2,5 +2,4 @@ export interface Language {
   id: number;
   iso6391: string;
   name: string;
-  filterListIds: number[];
 }
diff --git a/web/src/interfaces/License.ts b/web/src/interfaces/License.ts
index 0335c8e4b..22e392155 100644
--- a/web/src/interfaces/License.ts
+++ b/web/src/interfaces/License.ts
@@ -5,5 +5,4 @@ export interface License {
   permitsModification: boolean;
   permitsDistribution: boolean;
   permitsCommercialUse: boolean;
-  filterListIds: number[];
 }
diff --git a/web/src/interfaces/Maintainer.ts b/web/src/interfaces/Maintainer.ts
index d98163588..bc8e3be04 100644
--- a/web/src/interfaces/Maintainer.ts
+++ b/web/src/interfaces/Maintainer.ts
@@ -4,5 +4,4 @@ export interface Maintainer {
   url?: string;
   emailAddress?: string;
   twitterHandle?: string;
-  filterListIds: number[];
 }
diff --git a/web/src/interfaces/Syntax.ts b/web/src/interfaces/Syntax.ts
index 0709b8188..9b409bfea 100644
--- a/web/src/interfaces/Syntax.ts
+++ b/web/src/interfaces/Syntax.ts
@@ -3,6 +3,4 @@ export interface Syntax {
   name: string;
   description?: string;
   url?: string;
-  filterListIds: number[];
-  softwareIds: number[];
 }
diff --git a/web/src/interfaces/Tag.ts b/web/src/interfaces/Tag.ts
index 3c2c4a6a6..068c32671 100644
--- a/web/src/interfaces/Tag.ts
+++ b/web/src/interfaces/Tag.ts
@@ -2,5 +2,4 @@ export interface Tag {
   id: number;
   name: string;
   description?: string;
-  filterListIds: number[];
 }