>On G2xx devices, the calibration constants are in the locked INFO A segment, which I think is also not erased on a BSL mass erase unless you explicitly unlocked it using the BSL. So I think either way you should be safe, but still might be good
The F2/G2 BSL unilaterally/unconditionally unlocks INFOA, so a Mass Erase does erase INFOA. This is documented, but no rationale is offered. I'm sure it was done for a Very Good Reason, but it's a real bother.