Line projection issue

[old_snickers]

I have 4 workpieces arranged in a tensioning device with a grid 50 x 50. Each of them has a diameter of about 30mm. I have to calculate them with line projection and a lollipop-like tool because they have some undercut.

Now my problem is: i want to calculate the first workpiece and the others disturb this, although they are really far enough away. The "preview" shows the white lines, which are projected from outside. Now my toolpath on the workpiece to be processed, is interrupted in these areas, where the white lines touch the other workpieces. Ok, I can set the others to ignore, but with this the collision test is senseless...
Is there any possibility to reduce the enlargement of these projection lines? Incidentally, they grow up and get smaller with the blank and the tool diameter.

(PowerMILL 2015)

[M_Hennig]

I was under the impression those commands worked for all projection toolpaths,,  this explains why I struggle with the same type of toolpath in your original post. Now I don't even bother, I just drop the model out of the way, calculate and do what you describe. Maybe development could implement these commands for line projection.