diff --git a/packages/schema/src/cli/cli-util.ts b/packages/schema/src/cli/cli-util.ts
index a5bb81627..a0611fac7 100644
--- a/packages/schema/src/cli/cli-util.ts
+++ b/packages/schema/src/cli/cli-util.ts
@@ -105,11 +105,10 @@ export async function loadDocument(fileName: string, validateOnly = false): Prom
     const imported = mergeImportsDeclarations(langiumDocuments, model);
 
     // remove imported documents
-    await services.shared.workspace.DocumentBuilder.update(
-        [],
-        imported.map((m) => m.$document!.uri)
-    );
+    imported.forEach((model) => langiumDocuments.deleteDocument(model.$document!.uri));
+    services.shared.workspace.IndexManager.remove(imported.map((model) => model.$document!.uri));
 
+    // extra validation after merging imported declarations
     validationAfterImportMerge(model);
 
     // merge fields and attributes from base models
diff --git a/packages/schema/src/language-server/validator/utils.ts b/packages/schema/src/language-server/validator/utils.ts
index 3dd5b537b..032bf9a5e 100644
--- a/packages/schema/src/language-server/validator/utils.ts
+++ b/packages/schema/src/language-server/validator/utils.ts
@@ -1,20 +1,12 @@
 import {
-    AttributeArg,
-    AttributeParam,
     BuiltinType,
-    DataModelAttribute,
-    DataModelFieldAttribute,
     Expression,
     ExpressionType,
-    InternalAttribute,
-    isArrayExpr,
     isDataModelField,
-    isEnum,
     isMemberAccessExpr,
-    isReferenceExpr,
     isStringLiteral,
 } from '@zenstackhq/language/ast';
-import { isAuthInvocation, resolved } from '@zenstackhq/sdk';
+import { isAuthInvocation } from '@zenstackhq/sdk';
 import { AstNode, ValidationAcceptor } from 'langium';
 
 /**
@@ -109,80 +101,6 @@ export function mapBuiltinTypeToExpressionType(
     }
 }
 
-/**
- * Determines if the given attribute argument is assignable to the given attribute parameter
- */
-export function assignableToAttributeParam(
-    arg: AttributeArg,
-    param: AttributeParam,
-    attr: DataModelAttribute | DataModelFieldAttribute | InternalAttribute
-): boolean {
-    const argResolvedType = arg.$resolvedType;
-    if (!argResolvedType) {
-        return false;
-    }
-
-    let dstType = param.type.type;
-    let dstIsArray = param.type.array;
-    const dstRef = param.type.reference;
-
-    if (dstType === 'Any' && !dstIsArray) {
-        return true;
-    }
-
-    // destination is field reference or transitive field reference, check if
-    // argument is reference or array or reference
-    if (dstType === 'FieldReference' || dstType === 'TransitiveFieldReference') {
-        if (dstIsArray) {
-            return (
-                isArrayExpr(arg.value) &&
-                !arg.value.items.find((item) => !isReferenceExpr(item) || !isDataModelField(item.target.ref))
-            );
-        } else {
-            return isReferenceExpr(arg.value) && isDataModelField(arg.value.target.ref);
-        }
-    }
-
-    if (isEnum(argResolvedType.decl)) {
-        // enum type
-
-        let attrArgDeclType = dstRef?.ref;
-        if (dstType === 'ContextType' && isDataModelField(attr.$container) && attr.$container?.type?.reference) {
-            // attribute parameter type is ContextType, need to infer type from
-            // the attribute's container
-            attrArgDeclType = resolved(attr.$container.type.reference);
-            dstIsArray = attr.$container.type.array;
-        }
-        return attrArgDeclType === argResolvedType.decl && dstIsArray === argResolvedType.array;
-    } else if (dstType) {
-        // scalar type
-
-        if (typeof argResolvedType?.decl !== 'string') {
-            // destination type is not a reference, so argument type must be a plain expression
-            return false;
-        }
-
-        if (dstType === 'ContextType') {
-            // attribute parameter type is ContextType, need to infer type from
-            // the attribute's container
-            if (isDataModelField(attr.$container)) {
-                if (!attr.$container?.type?.type) {
-                    return false;
-                }
-                dstType = mapBuiltinTypeToExpressionType(attr.$container.type.type);
-                dstIsArray = attr.$container.type.array;
-            } else {
-                dstType = 'Any';
-            }
-        }
-
-        return typeAssignable(dstType, argResolvedType.decl, arg.value) && dstIsArray === argResolvedType.array;
-    } else {
-        // reference type
-        return (dstRef?.ref === argResolvedType.decl || dstType === 'Any') && dstIsArray === argResolvedType.array;
-    }
-}
-
 export function isAuthOrAuthMemberAccess(expr: Expression): boolean {
     return isAuthInvocation(expr) || (isMemberAccessExpr(expr) && isAuthOrAuthMemberAccess(expr.operand));
 }
diff --git a/tests/regression/tests/issue-1849.test.ts b/tests/regression/tests/issue-1849.test.ts
new file mode 100644
index 000000000..2362ac668
--- /dev/null
+++ b/tests/regression/tests/issue-1849.test.ts
@@ -0,0 +1,24 @@
+import { FILE_SPLITTER, loadSchema } from '@zenstackhq/testtools';
+
+describe('issue 1849', () => {
+    it('regression', async () => {
+        await loadSchema(
+            `schema.zmodel
+            import './enum'
+            
+            model Post {
+              id Int @id
+              status Status @default(PUBLISHED)
+            }
+
+            ${FILE_SPLITTER}enum.zmodel
+
+            enum Status { 
+              PENDING
+              PUBLISHED
+            }            
+            `,
+            { provider: 'postgresql', pushDb: false }
+        );
+    });
+});