AX 4: Import from XPO - need help

[glibs]

You can use compare layers utility. This function is available in import dialog. Compare your USR with .XPO there. There you can open objects from the project from your USR and from .XPO in separate windows. For fields, field groups and groups on forms and reports it is convenient to use drag-&-drop from .XPO to your USR.

[Hugon]

Brilliant! I uploaded most of tables and forms using this way. But I have problem this doesn't work for EmplTable. I have SYS and BUS layers in EmplTable and I tried upload second one (BUS). Can't do this. Any ideas why?