Converting in-text citations from other reference-management programs

Just on the off chance that the answer to this question is something other than “Of course not!”, I thought I would ask: Is there any way to convert in-text citations from Mendeley, Zotero, Bookends, or other reference-management programs into EndNote-compatible citations?

My editorial department uses EndNote, but some of the authors we work with use other programs. We can often get authors to send us files that we can import into an EndNote library, but we still have to re-insert all of the reference citations manually.

We use Word 2010 and EndNote X6. Thank you.