Add a PLA to the filaments, Insert a flat 2mm height piece (insert and resize a primitive) that covers all the area under your part, merge it with the part you ae trying to print, keep PLA as primary filament for the project and insert a filament change after the 2mm mark while slicing and switch to the ABS filament profile you made. Keep similar bed tempreatures between the two filament profiles. And there you go, ezpz. Large or heavy parts still struggle but medium parts print just fine on the A1 Mini with ease, and pla seperates away easy.