diff --git a/server/postgres/src/storage.ts b/server/postgres/src/storage.ts
index 4afbd5b4b2..1c943786d0 100644
--- a/server/postgres/src/storage.ts
+++ b/server/postgres/src/storage.ts
@@ -88,6 +88,7 @@ import {
   DBCollectionHelper,
   type DBDoc,
   doFetchTypes,
+  filterProjection,
   getDBClient,
   inferType,
   isDataField,
@@ -662,7 +663,9 @@ abstract class PostgresAdapterBase implements DbAdapter {
           const joins = this.buildJoins<T>(_class, options)
           // Add workspace name as $1
 
-          const select = `SELECT ${this.getProjection(vars, domain, options?.projection, joins, options?.associations)} FROM ${domain}`
+          const projection = this.localizeProjection(_class, options?.projection ?? undefined)
+
+          const select = `SELECT ${this.getProjection(vars, domain, projection, joins, options?.associations)} FROM ${domain}`
 
           const showArchived = shouldShowArchived(query, options)
           const secJoin = this.addSecurity(vars, query, showArchived, domain, ctx.contextData)
@@ -714,11 +717,11 @@ abstract class PostgresAdapterBase implements DbAdapter {
               options?.associations === undefined
             ) {
               return toFindResult(
-                result.map((p) => parseDocWithProjection(p, domain, options?.projection)),
+                result.map((p) => parseDocWithProjection(p, domain, projection)),
                 total
               )
             } else {
-              const res = this.parseLookup<T>(result, joins, options?.projection, domain)
+              const res = this.parseLookup<T>(result, joins, projection, domain)
               return toFindResult(res, total)
             }
           })) as FindResult<T>
@@ -739,6 +742,36 @@ abstract class PostgresAdapterBase implements DbAdapter {
     )
   }
 
+  private localizeProjection<T extends Doc>(
+    _class: Ref<Class<T>>,
+    projection: Projection<T> | undefined
+  ): Projection<T> | undefined {
+    if (projection === undefined) return
+
+    if (!this.hierarchy.isMixin(_class)) {
+      return projection
+    }
+
+    projection = { ...projection }
+    for (const key in projection) {
+      if (key.includes('.')) continue
+      try {
+        const attr = this.hierarchy.findAttribute(_class, key)
+        if (attr !== undefined && this.hierarchy.isMixin(attr.attributeOf)) {
+          const newKey = `${attr.attributeOf}.${attr.name}` as keyof Projection<T>
+          projection[newKey] = projection[key]
+
+          // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
+          delete projection[key]
+        }
+      } catch (err: any) {
+        // ignore, if
+      }
+    }
+
+    return projection
+  }
+
   private buildJoins<T extends Doc>(_class: Ref<Class<T>>, options: ServerFindOptions<T> | undefined): JoinProps[] {
     const joins = this.buildJoin(_class, options?.lookup)
     if (options?.domainLookup !== undefined) {
@@ -888,17 +921,8 @@ abstract class PostgresAdapterBase implements DbAdapter {
                 continue
               }
               if (column === 'data') {
-                const data = row[column]
-                if (projection !== undefined) {
-                  if (projection !== undefined) {
-                    for (const key in data) {
-                      if (!Object.prototype.hasOwnProperty.call(projection, key) || (projection as any)[key] === 0) {
-                        // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
-                        delete data[key]
-                      }
-                    }
-                  }
-                }
+                let data = row[column]
+                data = filterProjection(data, projection)
                 doc = { ...doc, ...data }
               } else {
                 if (column === 'createdOn' || column === 'modifiedOn') {
diff --git a/server/postgres/src/utils.ts b/server/postgres/src/utils.ts
index 8306ca0c02..fb05e31464 100644
--- a/server/postgres/src/utils.ts
+++ b/server/postgres/src/utils.ts
@@ -554,6 +554,9 @@ export function convertArrayParams (parameters?: ParameterOrJSON<any>[]): any[]
 }
 
 export function filterProjection<T extends Doc> (data: any, projection: Projection<T> | undefined): any {
+  if (projection === undefined) {
+    return data
+  }
   for (const key in data) {
     if (!Object.prototype.hasOwnProperty.call(projection, key) || (projection as any)[key] === 0) {
       // check nested projections in case of object