This is not new, but continues to be a bug. I've created a view in the Windows Order Entry example with Orderdtl as the main DD with Orderdtl constrained to Orderhea and Orderhea constrained to Customer. I did this as an example and will forward the code to Dennis.

The idea is that the user finds a grandparent record, then a related parent and then edits or creates the child as the main record of the view.

The problem is that when a grandparent record is found, the Clear & Clear All buttons in the standard toolbar remain disabled.

I use this DDO construction in a CRM application in which the user finds a Client (grandparent), then finds a Case record related to the Client. The user then creates a transaction or note record related to the Case. This transaction record, grandchild or Client, is the main DD of the view.