Hi,
When I open the Fly Tampa configurator for Sydney or Global, neither mention Australia v2.
OK, found the Fly Tampa Sydney_LC, and stopped it out.
Using a little system search program, "Everything", it finds tons of AU v2, but no mention of control panel associations.
EDIT: ok, applied the YBBN update, and the v2 box appeared. Now double buildings gone. All sweet.
Anyway, no worries. I will create a new post if I encounter further issues. Thanks for the help.