Changing Addons changes trial days

Changing Addons changes trial days

Hi - When I change the number of addons for a subscription that is still in trial mode, it appears to reset the trial back to the full # of trial days instead of the remaining. I have tried adding/overriding relevant fields (trial_remaining_days, trial_ends_at, next_billing_at, current_term_ends_at) to the api submission, but the behavior continues.

Is this behavior that I can change?

Thanks!