New group disappears

[Dennis Brown]

This has happened to me several times now in the development 
environment:

I select a group of controls and fields.  I ungroup them.  I select a 
few of the items.  I group them.  The selected items all disappear.

The inspector still has the missing items listed, but there is no new 
group listed that they belong to.

What is going on?  How do I get my missing controls back?

Dennis