you grab your sequential files, copy them, then working from the numbered copies
you'll minimize all but two, either cut or copy [ your option ] the 2nd file
at the end of the 1st file, so now you have part one and two back to back
continue that for the remaining tracks/sections you are consolidating.
save the file by using the file tab, not the save file icon and rename it
so as to find it later.
now, reopen it, and go to the end of each back to back section and magnify
that particular portion of the file....where there's most likely a GAP,
until you can now see the gap between the files....and use your own judgment
to delete the GAP for a smooth transition....it's an art form.
you may want to practice on just two or three gaps prior to doing the whole thing,
so you get the hang of deleting that portion the way you need it!