NEVER 
i cant stand the bambu start up procedure it sucks!
Anyways i have an update, I have tested different configs and what i found is that by selecting the default profile in the external spool on the printer/device settings in BL it ignores the k value calibrated for the pressure advance so by activating in the printer/device settings is a must.
Also found my saved profile for the tpu ironically it saves under tpu although i never told it to… little over done by Bambulab but glad i got this worked out now.
I can finally print with confidence! 