Replicator 2x profile bug

so i am trying to set up a replicator 2x profile on astroprint and no matter what i do i cannot turn off the “machine center is zero” setting. even if i turn off the autosync feature, i cannot get it to turn off the setting.

Our X3G profiles are assumed to always have that machine center. This is the case in almost all the configurations we have found with sailfish machines.

why? it is clearly not correct

When you slice with out slicer it is (unless something is broken) we set that in the start GCODE. What actually is the problem? Are you slicing and objects are appearing off the bed?