two versions installed, differences?

[stepic7]

I am using Oruxmaps after having discarded all other similar poorer emulations

However i realized I have two versions installed 6,5,0  and 6,5,0b

I wonder one is subscribed and which one

strange enough they seam to access some of the same previously collected data

Can I get rid of one of them, and which one?

How can I transfer data from one to the other?

Can i simply move desired items from one directory to other with file expert?

thanks