Alan - the "placeholder text" I'm using originates at the Plan Set level when I drag in the drafting template. I anticipated having to make any desired text edits at the Sheet Set level that would also flow downstream to the Sheets, then subsequently make any desired edits to the Sheets that would stay specific to just that sheet. However, as it's actually "referenced text" as you've pointed out, it appears that this method causes any edits made at the Sheet level to propagate back upstream to both the Sheet Sets and Plan Set then down any branches that may also be under the same Plan Set that were created by the same method. So based on what you've mentioned above, and what I've discovered experimenting, it appears that edited "reference text" will propagate the edit throughout all the branches of the Plan Set, which effectively eliminates using placeholder text in the template scheme. So having said that, and if I'm correct, it looks like I will need to rethink my approach.
Using a store/warehouse sheet to copy from as you've suggested is certainly a viable approach. Or, I can just get better at using and setting up the text styles. (have I mentioned how much I hate drafting annotation yet?)
Anyway - I'd like to suggest that the upstream links (only) be broken when a user elects to modify "referenced" text on the Sheet Set or Sheet level. Or, give us an option/property to do so.
I'll gladly box up and share the project but I believe we have fleshed out what I was doing incorrectly. Plus, ignoring best practices while experimenting (create a new copy dummy), I've deleted all the text in question by simply deleting the text at the Sheet level, which I'm sure you can guess, deleted it upstream and left/right as well.
Thanks,
Rich