Recorded a new track in the project and tab works fine (sort of*).
This was an additional 12 bars.
When I create a tempo map with that track, tab is then "broken".
I bounced a clone, PRIOR to create tempo, and that track does not work either.
* sort of
Tabbing forward and backward lands on different transients.
shift+tab appears to be more "accurate" meaning it does not "ignore" some transients.
T