I have a book on my tbr list.  Picked up another copy (by mistake) at a booksale... so I posted it.  But now it is no longer on my tbr list.  I have 2 copies, so I want it listed on both my bookshelf and my tbr list.  What do I do....

Thanks for helping...

youcan just add it again to your TBR list.

I've had that happen when I've posted heavily posted books before I've read them.  When I put them on my shelf it removed them from my TBR. So I just looked the book up again and readded it to the TBR. 

 I thought that if I did that, it would remove it from the bookshelf, but it didn't. Thank you.

The reminder list and the wish list are linked.  Adding a book to your RL will delete from your WL.