Modifiers are printed as if they are separate parts

[inovatorius]

Whenever I add a modifier let's say extrusion multiplier, the entire region that is covered by that modifier is printed as if it is a separate object with it's own perimeters and infill.

For example:

I would like to see an option that would allow to mitigate this. This would stop any unnecessary print moves and travels that impact the quality of the print also saving time.

This would be the ideal case (modifier is removed here):

We assume that the modifier for the extrusion multiplier is still there, but now everything is printed as if there was none. External and internal perimeters are printed in one-go without any additional travel moves and infill is consistent.

This feature is missing in pretty much all of the slicers and is only available in Simplify3D.

[supermerill]

duplicate of #914 #1092 and maybe others
It needs a rework of the gcode creator.
Currently, you print region separatly. For this to works, you need to have sub-region with gcode-only modifiers, and switch between these region when an extrusion jump over the boundary.
Nothing is in the codebase to allow that.
That's why I put it in a long-term goal.
Having a reworked gcode workflow that won't work on string but on extrusion objects may also allow this with some simple "post-"processing.

[foreachthing]

If you can, make your modifier just a layer (or two) smalller than your object and place it inside. That way your outer most perimeter is not disruppted.