Well, this isn't a solution.....more like a work-around. Have you tried adding code to the end of the list-box building code to switch sheets?

In other words, have it create the list boxes, switch to sheet  B, then switch back  to the sheet with the list-boxes? That way it would automatically do what's needed to fix it without the user ever knowing it needed fixing.

Hopefully someone knows why it's doing it (I'd love to know why myself), but if it's as urgent as you say it is, maybe the work-around will work for you.

That is not I have done, I manually switched between the sheets. And We should not do switching back  and forth between the sheets. I want the solution more than the work around. It got something to do with the focus of the listboxes. I hope you got me.

How are you updating  them? If you're using code, please include it in your next posting - just cut and paste it into the message body.