We have a new client who is hosting FM 13 files on a FMSA 12 server. So far, we have experienced extreme speed issues and huge crashing issues, but cannot cannot be certain where they are coming from. The file in unnecessaritly complex (way too many relationships, tables and table occurances), the server is somewhat underpowered and their internet connection (all work done from offsite) is very slow. Are there known issues running FM13 files on a 12 server? How complete will a recovery be under these circumstances?