Yes, your old sLEO continues earning rewards in the pool after unstaking. Rewards pool collectively and pay out later via @leo.tokens—migrate to new contract to claim without loss.

@khaleelkazi (Jan 20): Rewards resume post-migration poll. Unmigrated sLEO protected but will miss out if not done ASAP.

@senorcoconut (Jan 12): Old sLEO still pools rewards, released after migration window.