Just because it has been brought to the table doesn't mean it will go anywhere else. "Tabling" a discussion suggests that we are stepping away from the table for now. We are taking away any deal we have struck, but leaving behind any issue still under contention. Maybe we will bring it up when we come back, maybe not.
We use "tabling" in much the same sense as the idiom "leaving money on the table", meaning "concluding a transaction without demanding all consideration owed to you".