>>>I don't understand the problem exactly here. Why you can not have 3 related biz objects with appropriate properties for the child objects (Save on Save parent, etc.) ?
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>>I do have three business objects, and that's how they're set. If I requery() when changing pages to get different grandchild sets, any changes to a previous page(and previous view) are lost. How can I set it to edit different subsets, and only use one save/cancel?
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>Don't requery. Do save on a parent first, then requery() on the parent. Save on the parent should save children also (if properly set up) and requery() on the parent should requery all too.

While that works, it makes it impossible to revert those changes - a feature I need.