I use the same program and what I do is to make a new gauge at the spot you want it at even if it is a gauge you allready have on the panel then I remove the other gauge so as not to have duplicate gauges. you might have to alter the bitmap for the actual panel itself to cover up any holes you might leave unless you are planing to put a different gauge in its place.
Rember to save your work.
It is a little hard to move a existing gauge someplace else on the panel since the orignal bitmap does not have a hole for the gauge where you want to put it.
Which is probably why the gauge disapears.
Usually you make the bitmap first then put gauges in it afterwards, But by adding a new gauge you can trick the program to remake the bitmap for you although it really does not alter the actual bitmap it will look as if id did.
Read the awesome help file that comes with the program it can tell you better than I can. But that is one way to do it. 8)