merging files after each other
I work on a composition which is 34 minutes long and has 19 verses. Years ago I split the verses up into individual files (which now are .logicx files), because it back then seemed easy to work on them individually with instrumentation, transitions etc. Now my problem is that I cannot put (merge, combine, unite) these files (any two files) into one. All files have the same setup of tracks; so far there are only MIDI tracks with contents, and no audio yet.
I have googled unsuccessfully and have tried to find a way to put the second file with its track at the end of the first, but I did not succeed.
Is there anybody who knows how to achieve this?
Logic Pro X, OS X El Capitan (10.11.1)