Apparently Bambu Studio DOES NOT save speed settings with the Filament settings. Instead speed settings are applied to the Print (not Printer) Settings group. Whether you have the AMS unit or not it seems appropriate that speed settings would be grouped with the Filament Settings. For now we need to save print settings for each filament manufacturer and characteristics (speed) and we need to reselect (possibly) a different print settings profile when you use a different filament.
I would like to suggest that all the “speed” settings be added to a “Filament Speed Overide” section. Any setting in this new section would take precedence over the current Speed settings location.