The only thing I can suggest is creating views in the dbs by @modified date and cut and paste all the docs that got created in the future. You might be able to get by by with just a resave of the doc but not sure what happens when replication sees a doc that was created after it was last modified.
Clearing history should be done as well. If you have dbs that where created in the future and not used yet you might as well delete and recreate them just incase,