Odd contour problems when copying a part from a DXF file

Hi there, I’m using TNG version 7.0.21

I’d like to know if this issue is something on my AutoCAD end, or on the sheetcam end. these vectors that I’m cutting out turn all wacky along certain curves when I try to “copy to new part”. I can provide the job file to you, too, if you’d like to try and replicate it on your end.
Image of software view

Please see this forum link to prepare and send us a customer support.zip file.