Form grid loss focus after add a view on OUTER JOIN

Hi community, strange problem.

On the SalesTable form i have added a datasoure based on a View.

This view, has some data at InventTransId level, and i have linked to SalesLine in OUTERJOIN mode, join is made on SalesId and InventTransId

After adding datasource the sales line's grid loss focus and moves to the first line when i peform an operation on sales line.

If i remove the new DS the focus remain on selected line.

I don't know, there are some limitations using VIEW on a form?

Thanks a lot