If you don't want to apply a new snapshot, you will have to manually insert all the missing recors in your subscribers, and update all the different records, too.

Since the subscription, expired, the distribution db didn't save all the transactions to apply, so you have your db not on sync.

The easiest way it to reinitialize the subscriptions, and then apply a new snapshot.

If you already reinitialize toy subscription, you will have to apply the snapshot, unless you manually sincronize your db, drop the publication and subscribe your subscribers without the inicial snapshot.