Thank you so much, Bal, for your prompt and helpful feedback.
I'm sorry to learn there was no fix for this broken link issue, but I'm glad the nature of your data storage was such that a manual import of attachments from TB8 to TB9 was doable.
Your feedback, along with other's import observations, combined with my own preliminary experience importing test brain projects into TB9, suggests that I may be in a similar boat with much of my own TB8 content: one large megabrain and several topical brains.
Because of ongoing problems I've had in TB9, along with missing features in TB9, my daily work is still in TB8, and I'm simply working in test brains now in TB9. However, when it comes time to eventually move into TB9, I suspect will probably have to archive my old TB8 content, as well.
Not really what I had been hoping for with the TB9, but I'm coming to terms with this likely possibility.
In the meantime, thanks again for your helpful reality check.
In addition, FWIW, Mark Trexler and I both ended up asking TB staff for clarification on the fate of links in TB9 following an import and/or a GUID change, and I'm looking forward to seeing if there will be any encouraging news on this front in the days ahead:
> Mark's Questions: Is TB9 Backward Compatible or Not? What About TB10?
> Metta's Questions: TB8 & TB9: Impact of GUID & Import Changes on Local & Web Brain Links