Is it possible to copy fundamental data from 1 database to another safely?

I have a database of EOD stocks which I download with yahoo via amiquote.
I have a seperate database for live quotations that does not provide fundamental data.
Is there a way I can periodically copy the fundamental data from my EOD database and import it into my live database and is this safe without corrupting data?

Fundamental data are symbol metadata and you can only copy them together with all symbols. You can simply copy broker.master file from one database to another but it will copy all symbols from one to the other and overwrite any symbols you have in second db.