FTM 2014 > Tools > Options > General > Search > Search online automatically when connected to the internet - leave this checked
... > Exclude Ancestry Member Trees from automatic search - check this
This is probably the best option. You get a leaf when a new "fact" appears - you do not have to keep ignoring all the "tree" (mostly) garbage ;-) I suspect that "fact" data is not synced with Ancestry - I suspect that each program is using the same logic - ignore a "fact" if it is already in your tree. Like someone said, hints are not "synced" between products. If you turn on these options there is probably no need to do so.