I have FM Pro 11 and want to know if the old format of my files will be saved as backup if I convert to a newer version of the program?
Yes. FileMaker 12 and following use a different format (fmp12), so your files will need to be converted to the new format, leaving the old versions intact.
I like filemaker from version 4 because conversion from old to new version is very simple. Read the link : Converting files from FileMaker Pro 11 and earlier
Retrieving data ...