I have been struggling with this for years now. SWS Track Notes don't get copied when you duplicate tracks (for whatever reason).
Today I discovered
"cfillion_Duplicate tracks (preserving SWS track notes).lua"
on Reapack, and this has made my day!
It copies the SWS Track Notes with the track!
I would advise anyone who uses SWS Track Notes to go find this on Reapack and install it
I copy tracks a lot - to make small changes on the copied track. Also, I have a little routine for when I want to change a frozen track that has FX on it. It copies the FX on to a temp track, so I can unfreeze, fix, refreeze - and copy the FX back on to the frozen track. This would always lose the Track Notes, since they wound up on the temp track, which I'd delete before realising...
Happy Days!