When attempting to edit my subtitle text, it not only makes changes to the block of text I am editing, but it also changes the block of text directly following the subtitle. These are two separate graphics clips that were created from splitting a singular graphics clip.
1. Transcribe clips in sequence
2. Create captions from transcript
3. Upgrade captions to graphics
4. Cut use the razor tool to cut a graphics clip in half
5. Editing one results in the other being changed. This also occurs on occasion when copying graphics clips and editing them.
This is extremely unhelpful for adding subtitles throughout long videos as there are many times when Premiere Pro simply doesn't do a good job at identifying what the words are/where the best break is in the flow of the dialogue. That's why it is useful to cut and copy individual graphic caption files and to edit them as their own individual text so that the formating is preserved.