Hello, I have read that BA will allow for TPs gained on the first 2 weeks of the new membership year to be used on the previous year.

Wanted to confirm the following:
– Current TPs 425
– Year end: 8th June 2022
– 1 flight with IB: LHR-MAD Business 40 TPs on 11th June 2022
– 1 flight with IB: MAD-BOG Business 140 TPs on 18th June 2022

1) I understand BA won’t give silver on the 11th June as you need 600 TPs not 450 as per the current offer
2) So After the flight on the 18th silver status should be attained as I will have 605 tier points (if the 180 from the two IB flights are backdates as they are in the 2 weeks grace period)
3) Is there any issue with flights being IB instead of BA?

Something I am missing here? Thanks!