Hey guys! We started implementing FAM, we had all the FAM in spreadsheets and used to csv import the depreciation journals. Now with the FAM module, we want to create these mid-life assets and stop using the spreadsheets as a paralel control, Suite Help says I have to import the depreciation history, but, I'd already depreciated trhought journals before aquire the FAM module. Won't importing this history mess with my accounts?

No. Just importing depreciation history records does not generate journal entries.