Umm, must be some setting somewhere Hugh. All of my RB files automatically save to SEQ files. One tip, when you do save, initially save the file using "Save AS...". This seems to capture all of my tracks and settings, regardless if they are midi, RealTracks or audio. After that initial "Save AS", I can just use the normal "Save" and any further changes are also saved. But in any case, they are all saved as SEQ files.

Jeff

Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2025, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3