That's probably because you've copied and pasted - which creates another instance of the same text. i.e. alter one and all the copies change. You can drag from the Titles & Text to create a new unique instance of a Title. Or, in Project Assets right-click one of the texts and select 'Duplicate' - this creates a new unique instance of text that you can drag to the timeline and edit independently.
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Thank you! I did indeed use copy/paste to try to preserve the format of
Will try your suggestions.
Neale provided the workflow for using an existing Title, but creating (Duplicating) a new, separate Title from it. To explain what you encountered, you were creating Instances of the one Title. They are all linked, so a change to one, would affect all Instances of that Title. That can be useful, if a Title is used multiple times, and then a change needs to be made. However, in your situation, the Duplicate is the key. In Premiere Pro, the process is "New Title Based on Existing," but that directly translates to the Duplicate in PrE.