Identify the kind of access problem
Describe whether a key will not turn, a handle is loose, a latch will not engage or the opener strained while the door was locked. Keep the keys and door identification available for the appointment. Do not keep operating the motor against resistance or attempt to force a bent locking bar.
Reconcile manual and powered operation
The correct locking arrangement depends on the door and opener instructions. A manually operated door and a motorized one may need different treatment. Ask how the proposed work prevents a mechanical lock from conflicting with automatic movement and which operating instructions the household should follow.
Confirm what access will change
If a key or control has been lost, state which access methods are affected. Replacing a physical lock does not necessarily remove app users or erase remotes from an opener. Keep that separate control review in the service request when both concerns exist.
Your questions
Will changing the lock erase remote controls?
No. Physical locks and electronic access are different systems.
Should I test the opener if the door may still be locked?
No. Resolve the locking position and follow the equipment instructions before powered operation.
