Servicing 3570.50 (1861) Speedy with 3861 Bracelet at Omega

I am about to send in my 3570.50 Speedmaster from 2012 for service. I was never a fan of the chunky bracelet it came with, and made the switch to the 3861 bracelet in 2021. My question/dilemma is that I don't know if I should send it in for service at Omega with the newer bracelet. After five years of wear, my 3861 bracelet also needs some TLC.

I hear Omega sometimes advises against using the newer bracelet on older models, and I would hate for them to ignore servicing the bracelet.

Anyone here have experience sending in their 1861 Speedmasters for service with the 3861's bracelet? Thanks for your insights and comments.