You are welcome.
No one said our life is easy. They only said that we would receive complaints from ungrateful users who have not cleaned their build plate and blame us for the print failure!
No real long answer. It requires BL to extend the envelope logic I pushed for to the print-by-object.
There are limitations, though, meaning it would not work in all cases because…
The A-series printers have a much shorter area to play with when print-by-object is in place than the other printers that use the Core XY motion system.
The printable height limit is based on the bottom edge of the x-axis bar for the A-series.