I know I've seen on here some discussions about some Air Canada flights that are "Tango" fares not being eligible for US Dividend Miles credit. However, what about "Tango Plus" fares? When looking on Air Canada's site, it says these are "K" class fares, which according to US Airways' site are eligible for 100% miles. Are there any exceptions to this I should be aware of? Also, does it matter if one of the segments is on Jazz (in a "K" fare)?

Appreciate people's insight and experience with this in advance!

Thanks!
-Matt