Massive Blobs left on print before color change.

[jameswis 0]

I have a mixing nozzle printer.  I'm using black and white filament.  I'm trying to print 2 identical objects side by side.  The issue is that upon color change, the print nozzle is dumping large blobs of filament down on the print.  Its not like ooze blobs.  This is fully extruded blobs..  I'm going to attach a picture for reference.  And this happens right before the nozzle runs over to the prime tower.

 

Someone please help.  i'm going insane!! 
Here is a picture of the issue.  I hope someone can help me.

 

[GregValiant 1,276]

It sounds like it's priming instead of retracting.  Use "File | Save Project" and post the 3mf file here.  Post one of your "bad" gcodes as well.