My apologies for the delay. Though experience (both in DoD work and personal home environments) I've learned to isolated and older environment from the new. The simplest for the move from TB10 to TB11 seemed to be to delete the TB10 desktop environment. Based on my reading of Harlin's and Matt Caton's posts it was pretty clear that the data structure created in the move from TB9 to TB10 was effectively retained intact. That left the initial problems being reported as attributed to the TB11 application. My other criteria was an improved Android client TB and specifically, that the Notes functionality on the Android was effectively mirroring that of the desktop. I've communicated to TB developers on several occasions that bringing the Note functionality on the Android (I don't use iOS) and the desktop into parallel should be a priority. I view TB as a productivity tool to enhance thought "capture" and when spare moments are available, to flesh out the spur of the moment capture and add additional embellishments, usually as "jumps" to related topics, or children of the topic initially captured. So, with the Android and the desktop (PC in my case) seemingly reasonably stable, I moved totally to TB11. I didn't have to delete anything on the Android as the update process "killed" the previous version. On the desktop, even though I had isolated the new environment, occasionally the PC environment has on occasion managed to have some cross boundary issues left in the registry or buried elsewhere, so my practice is to backup, kill old version, reboot, install new, reboot, restore data, backup to an isolated copy. It is sometimes painful, but not doing so has occasionally presented problems. Of course, being a frail human, I on rate occasions manage to mess up my sequence and suffer the consequences. When the underlying data structures are changed, this described process leaves enough fall-back points to enable recovery. Of course I have old war stories to support some of this, but those are for another time and place.
I hope this is sufficient explanation.
Dennis Ruth, CISSP Retired
Aerospace Scientist Computer Scientist Lieutenant Colonel (Ret) US Army Professor (Ret) National Defense University College of Information and Cyberspace