In fact these holes move because they are linked to excel sheets and therefore it varies in their positioning but should not go from right to left from their origin.
All my machining or drilling is linked to excel sheets and I sometimes have the same problem on machining.
Always the same part and the same machining or this time only the Y-axis went to the wrong side.
This problem is random, sometimes it goes well, sometimes the two axes change sides and sometimes like this time if only one axis has gone to the wrong side.
If someone had a solution to our problem (I put it to our problem because my colleague also has the same problem although our parts are not built in the same way).