importing another library in Aperture
I'm compiling libraries and have one Aplibrary that is 43 G in size and am trying to add/mer/import one the is 7G in size - I do think there may be similar pics but not all - I've just imported without any issue 3 other libraries to this one but now when I try I get this message ==
Error Importing Library
The library could not be imported because it is a duplicate of the library currently running.
I have tried to import the 7G initothe 43G and vice versa, same message - Aperture otherwise works fine on Mojave, just am cleaning up libraries before I try to migrate
iMac 27" 5K, macOS 10.14