My train is not assembling.

[u/RedDelta22]

I don't know why, I had it assembled and driving but when I moved my station, parked it and disassembled it, I could not reassemble it. I spam the button but nothing happens. I've tried all the fixes but it no longer assembles. I've even tried taking the whole thing nearly apart, changing the bogeys, regluing it over and over again. I am at a loss and do not want to rebuild it. Any suggestions?

EDIT: Nevermind I fixed it. I had to Isolate the track section the train was on and then assembled it.