There are two conversions that are different than normal conversions, and those are Stipple and Echo. Converting Echo or Stipple to anything other than a run operates normally; the outline and any holes are preserved.
There are two conversions that are different than normal conversions, and those are Stipple and Echo. Converting Echo or Stipple to anything other than a run operates normally; the outline and any holes are preserved.
More:
Stipple to Run