ZEC address replacement and old worker history
A worker record belongs to the pool and payout address used when shares were submitted. Replacing a t address can create separate histories even if the worker label stays unchanged.
What to check
Keep the old t1/t3 address, unpaid amount and last-share time. Validate the new address against the pool’s current rules before checking new shares. Retain old records while any balance is outstanding. An empty worker list under the new address is not a reason to discard evidence needed to reconcile the old account.
Example
Example: rig-a moves from A to B while A retains an S/s average. That historical value does not prove new shares still go to A. Check the last fresh share and active configuration.