My solution is to create a new collection each time I want to post to Facebook.
1. Right click on the Facebook Service and choose "Edit settings..."
2. Click on the "Plug-in Manager..." button.
3. Highlight "Facebook" in right-hand column and click on "Plug-in Author Tools." Click on "Reload Plug-in." Click on "Done."
4. Fill in "Description." Click on "Authorize on Facebook." Click on "OK." (If Internet Explorer throws up a Security message, just OK it.)
5. At "After authorizing with the web browser, continue here...," click "Done."
6. Click on "Save." (Sometimes the "Save" button takes a long time to activate.)
7. You can now go to the Facerbook Service and create a collection.
If you are not all wore out after all that, you can now use the Facebook "Publish" feature again. (I can't confirm but suspect it would be for a one-time use and creating another collection would require jumping though the same hoops.)
Additional note: After "Saving," a strange message pops up stating "You have changed the settings for this publish connection. Do you want to mark all [212] photos in this connection to be re-published, or leave them as they are now." I have no clue what that means so I opt for the (I hope) safest option, "Leave As-Is."