When you add resources to the favorites panel, a simple rule is in place:
- If you add resources from the library, a link to the resource is added.
- If you add open resources, a link to the resource at the current opened position is added.
That same rule normally applies to resources added to bibliography documents, too. However, there's a bug whereby sometimes the last opened position is added to items in a bibliography document, even when you add that resource from your library. I've not been able to determine what triggers this bug. The actual page number may not actually be the right one, either. I've had a resource last open at pg 313, but when I added it to a bibliography document from my library it created a reference to pages 294-301.
There is also a bug whereby dragging tabs to a bibliography document doesn't always create the page numbers. For example, dragging pg 307 of Conzelmann's commentary on 1 Corinthians doesn't create the page numbers, but dragging page 296 does.
A third problem affects resources that have a headword index but not page numbers, such as Easton's Bible Dictionary. It would make sense in this case to include the name of the article in the bibliography document, but that doesn't happen. Resources that have Bible references but not page numbers, such as Jamieson Fausset & Brown do this already.
The favorites rules work really well, and the lack of consistency in bibliographic documents is really quite frustrating.