You would purchase 12, then contact FileMaker directly to get a
"downgrade license" for $5.
I need to buy a new license for Filemaker. I would like to purchase FM
12 but install 11. Then if/when I updated the underlying data I want to
convert my copy to 12. I understand this can be done. Do I purchase 12
then find a copy of 11, install it then use the license number form 12?
When I want to move to 12 do I do a new install?
Any help from someone that has done this would be appreciated!
Do you then still have to do another install? Does FM send you a link to a download?
Yes, it's an entirely separate install.
I believe FMI will treat a downgrade as an online purchase, sending you a license key and download link by email.
You have to buy directly from FMI they will send you a link to download 11. You can add to an existing VLA or AVLA but I don't think you can just buy one license if you don't already have a VLA. You may have to go to ebay or something if you just want one copy of 11.
I recently upgraded retail FMPA 10 to FMPA 12 via online purchase from the FM Store. They sent me an e-mail with download links and a standard retail licence agreement (e.g. it permits installations on home and work computers).
I then contacted FMI to downgrade to FMPA 11, which cost me NZ$5. They sent me a similar e-mail with download links. The included licence agreement was a VLA which only allowed a single installation. I don't have any VLA apart from this.
I expect that if I had a boxed retail edition of FMPA 12 (upgrade or full install), a downgrade to FMPA 11 would have been exactly the same: a single licence VLA.