Why ?Some lines were deleted in PDF import to Rhino 7 SR0 2020-4-21 (Public Build, 7.0.20112.12445), and Rhino 6 SR26 2020-4-20 (Rhino 6, 6.26.20111.03551)… and in grasshopper (PANCAKE (by illusionwing))
This seems to be a #bug in Rhino because it does not have a problem in AutoCAD
In the to-be-released version, Pancake’s Import will be able to copy some basic attributes, while the full ObjectAttributes is not copied to prevent temporary memory leak. (the detailed behavior is still to be changed before release)
And sorry I misunderstood you in my email reply. It seems missing lines are due to an issue within Rhino’s PDF importer and I’m afraid nothing can be done from the Pancake side.
My apologies that the attributes aren’t imported by default to save time. Plz right-click the component, enable “Copy Attributes” and press F5 to re-compute. I would put it enabled by default in the next beta.