Supposing with stacks deleted you mean the files are still there but not any more in a stack?
Stacks can be very tricky, and for some reason they can disappear all or partly in one folder. I have this sometimes when being to fast with renaming files or some other keystrokes. it is very troublesome indeed.
Also Bridge is not officially supported for use over a network. It is very sad but sometimes I can do weeks without groups unstacking themselves and out of the blue the are gone.
For me they are for saving space in the content window and can be easily redone. If you rely heavily on stacks you better use a second safety like rating or maybe better a specialized keyword so you can find them back.
Thanks you for your solution. Yes I mean stacks
Do you propose good alternatives and it will help me!
Do you have an idea if I can contact Adobe about this subject?
Thanks you for your great help.
Have a nice day.
This problem is reccurent. Can you tell me where I can contact Adobe?
I can't get an address to write to. If I often search the stacks are destroyed for no reason.