I just upgraded to FMP16 and noticed that all new files that I create still have the extension .fmp12 even though I create them in 16. Is this normal? The reason I upgraded to 16 is that 12 is incompatible with MacOS 10.13 (High Sierra). I have not uninstalled 12 because I cannot locate instructions for doing so. Is it necessary to do that? Any help would be appreciated. Thanks.