Quick Question. Can a Rift enter a Vortex?

If is does what happens? does it just sit there spitting monster's out directly into the vortex when it move pattern shows up?

"[KH] 3. What happens if a Rift appears in Kingsport and moves into a Vortice? I would say it simply remains there, spitting out a monster that instantly passes through the vortice every time it is supposed to move, but again, the rulebook doesn't say. (06/13/08)
If a rift moves into a vortex, it just sits there, as you surmised. Note that a rift will still add a doom token / spit out monsters if it cannot move. The drawing of the proper dimensional symbol on a mythos card is the trigger for that, NOT the actual movement."

From:

http://www.fantasyflightgames.com/edge_foros_discusion.asp?efid=5&efcid=1&efidt=895

Sticky threads aren't there just to have less threads available on the first page (well, not all of them ).