A colleague of mine has indicated that there is an issue of moving the robot in TCP coordinate system using the mechanical status window.
I have imported an IRB 2400L and AWGunPKI500_22 into a cell.
I taught a target in the station then moved the robot using the linear tab with reference to the tool (AWGunPKI500_22), after moving the robot back and forth in the z direction, it can be seen that the robot drifts.
The difference in the two targets can be seen in the attached zip.