eagles9999 wroteNope...
Tried but it totally messed up existing and screwed with different elements on the form.
Would love to have it implemented though.
I have made only the most cursory attempts at this, but it seems that there is a trend towards removing the -o suffix within the v4 names and replacing them with a fa_ prefix.
I've added both v4 and v5 to my startup.html and played about with a couple of my obvious fonts.
It seems like if you can identify all the v4 that you used that is in the open style you could export the BSV into xml and do a search and replace - also what I would describe as a ball ache of a job to complete - but the options seem to be that or running with both v4 & v5 and searching each out individually.