@migaticadesign,
The discussion in this thread was about the merge method used when the new caption workflow was introduced in PR 2021 (PR Version 15.0.0). It also discussed a problem some users were experiencing with that method.
The merge method was changed in Version 23.4.0, and is still in use with the current Version 24.3.0. I described that method in this post:
https://community.adobe.com/t5/premiere-pro-bugs/merge-captions-suddenly-gray-and-unlcikable/idc-p/13891108#M11033
So it hasn't actually changed that often. But keeping track of source vs sequence view and text-editing vs static transcription can make it appear complicated.
I recommend asking any follow-up questions on the newer method in that other thread.
Stan