Forms :: Requery Subform After Filter

I have a main form (Frm ViewModel) with a subform (Frm class_attributes) in datasheet-mode based on a Query.Frm ViewModel has two controls, a ComboBox Select Model (presents you with a list of data models ) and a ComboBox Select Class (presents you with a list of Classes selected from a class-table, based on the model-id derived from the Select Model ComboBox). The subform Frm class_attrbutes shows you all class attribute combinations based on the model-id derived from the Select Model ComboBox.After the initial selection of the classes and attributes, the subform Frm class_attribute can be filtered on class by the Select Class ComboBox.

As long as I just switch between models through the Select Model ComboBox, it all works fine. The subform Frm class_attributes is updated (Requery) correctly.The problems start when I filter the subform Frm class_attributes, either through VBA OR by using the GUI filter possibilities of the sub form itself.

Private Sub select_class_AfterUpdate()
[Forms]![Frm ViewModel]![Frm class_attributes].[Form].Filter = "class.object_name ='" & [Forms]![Frm ViewModel]![class_name] & "'"
[Forms]![Frm ViewModel]![Frm class_attributes].[Form].FilterOn = True

The filter works fine, but once youve used it:
- The filter stays active, even when turned off, so when you Requery the subform it reutrns results with the original filter.
- The filter is removed, but now the subform after requery keeps showing the selection of classes & attributes for the model_id where the filter was first set.

I tried all possible combinations of FilterOn = False and .Requery but it doesnt solve it. I tried reassigning the RecordSource but since the underlying SQL is extensive (a few joins) Access seems to have a problem with this

[Forms]![Frm ViewModel TST]![Frm class_attributes].RecordSource = "SELECT [class.hierarchy],
[class.object_name], [class.technical_name], [class.definition], [parent_class.object_name]
AS ParentClassName, [parent_class.level], [A.AttributeName], [A.AttributeTechnicalName],
[A.AttributeDefinition], [A.AttributeType], [A.AttributeTypeDescription] FROM [parent_class]

[Code] .....

I tried making the sub-form a bound form by manually linking the masterfield to the Select Class ComboBox..I played around with the On-Focus and OnCurrent-events