this is on the list to get fixed, thanks for your patience
presets are not really functional beyond volume settings, and recordings are not exported to disk. it’s on the todo list
you should be able to just record over a sample. you might want to RESIZE the clip before recording over. you’ll need to turn off overdub to do an overwrite. i’ll add a CLEAR function soon.
recently i’ve been focussing on system-wide improvements and the studies to facilitate people making their own scripts, but i’ll be shifting back to working on the core scripts (mlr, etc) very soon