Eclipse "Import from Server..." function corrupts the JCR
Executing the "Import from Server" function corrupts the JCR, by leaving out attributes of jcr:content.
Example showing /content/dam/myproject before (right) and after import (left):

What could cause this and what's the solution?
Eclipse version: Neon.3
Sling IDE Plug-in: 1.2.0
AEM: 6.3 with SP1, CFP2