Databases being removed from replication tab

I have about 15 databases on our server that I replicate monthly to an external hard drive connected via USB.Every time I go to do this, I have to re-add all the databases and reset the replication settings - I assume because the referenced drive doesn’t exist on the other days of the month. Is there any way to keep these entries or export and re-import them or something?

Subject: Databases being removed from replication tab

Why not create a batch file that copies the files from the server to the External Drive?

The would effectively be replicas of each other.