System Information
Operating system: Ubuntu 17.10
Graphics card: GTX 1080

Blender Version
Broken: blender2.8 23284e4dde5
Worked: master 786870e26f8

Short description of error
Copy pasting between blend files, it does not honor the collection hierarchy, Previously with blender 2.7 we could disable 'Active Layer' and the objects would go to their correct respective layers from the original blend file. Now with Blender 2.8 the only option is to have the copy paste on to the active collection, ruining any sort of collection hierarchy that was previously setup.

Exact steps for others to reproduce the error

1. Open Blender 2.8
2. create a new collection called 'test'
3. move the cube into this the collection 'test'
4. create new blend file
5. delete everything apart from the default collection 'Collection'
6. create new collection 'test'
7. make the active collection the default collection 'Collection'
8. Paste
9. in the 'Paste Selection from Buffer' dialogue box, disable active collection
10. notice how the cube is still in the default collection 'Collection' not 'test'