Such a tool surely is possible - in R77.30, you could perform that manually (by copying fwauth.ndb, lcrulebases_5_0.fws, rulebases_5_0.fws, fgrulebases_5_0.fws, slprulebases_5_0.fws and Objects_5_0.C from SMS /conf), but now, all data is in an SQL database. But honestly, where and for what purpose should such a tool be needed ? If i have a backup, i can get a working configuration in a very short time. And if - on SMS - i never do a migrate export i have only myself to blame 😉
CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist