Form R5 in db R6

I have a db written in R6 with some forms in R5, in order to allow client R5 to work.I don’t know how this is possible (it is a thirdy party product).

I want to modify the R5 form. What is the best practice? How can I modify such forms?

Subject: form R5 in db R6

Is the databse saved as an rg or r5 on-disk structure?If it’s still r5, then use an r5 designer to ensure it will work

Or if you have to use r6, make sure you don’t introduce any new r6 stuff

Subject: form R5 in db R6