CUA : User parameters problem

Hi Experts,

after implementing CUA on our landscape, we got some problems with user parameters.

Some user parameters have disappeared on child systems.

I think that one of child systems has deployed its own user parameters to all others.

So, users can't find there parameters. It's a big problem.

WHat's the solution?

Could we import user parameters (usr05 table) from a standalone system (not in CUA) into CUA (usr05 of CUA mandant) and then do a mass change to all child systems of CUA?

Regards

Chris