STEPS TO REPRODUCE
1. Drag a data record node (does not seem to matter which type) onto the map.
2. Open up Contents and browse for digital file.
3. When metadata window comes up, fill in all the gaps, click Save then OK.
4. Drag another data record node onto the map.
5. Open up Contents, select 'Physical Object', click 'Specify'.
6. When metadata window comes up, just click OK.
WHAT HAPPENS
Metadata from step 3 is associated with node from step 4. Even though the Contents screen says the node is a 'Physical object' initially, after clicking OK it switches to being a Digital object.
EXPECTED BEHAVIOUR
No metadata should be associated with node from step 4.