I used to be able to select many splines at once and convert them into small arcs with set tolerence on Mcam9, but when I go Break Many Pieces on McamX, It will ask me to select An entity, not multiple. I'm working on a geometry with many lines, arcs, and splines mixed.

HI there, I'm working on this Italian stone CNC saw with ECS control and sometimes having unexpected G02/G03 move that cuts into pieces. MastercamX doesn't show that in toolpath or verify, but i can see it on the CNC machine's simulator. It only happens when I'm using Surface rough pocket toolpath. I thought I once fixed the problem in control definition of post processor years ago but not sure what i did. My arch settings in the control definition is attached. The line N1629 is the problem line making small unwanted circular move cutting into the surface. I erase the line and the program is fine but what settings do I have to change to avoid this from happening again? Please help. N1621 G01 Y10.3712 N1622 G03 X2.3801 Y9.8346 I4.4166 J7.8963 N1623 X2.0117 Y9.3182 I4.1197 J8.2043 N1624 X1.7864 Y8.5693 I3.8673 J8.3516 N1625 X1.7768 Y8.3734 I3.7694 J8.3734 N1626 X1.8625 Y7.7953 I3.7694 J8.3734 N1627 X1.9823 Y7.4879 I3.7678 J8.3609 N1628 X1.8452 Y7.0026 I2.7726 J7.0026 N1629 Y7.0007 I2.7726 J7.0026 N1630 G01 Y.0007 N1631 G03 Y-.0056 I2.5301 J-.0056 N1632 X1.8475 Y-.0625 I2.5301 J-.0056 N1633 G01 X-.8125 N1634 X.3693 Y1.4375