Thanks Earl,
I'll repeat the process again as soon as possible, but I'm pretty sure when I did it last time (logging the whole time) I didn't see any join task request (maybe I missed it).
I think for what you have to do you need to run the join job first and then create the view from the result (unless for you workflow you need to create the view first and then the join?)
As you can see, using the "Join Features" tool within the Web Map Viewer:
You can do the execute the join task and create the layer view in one step <- this was the workflow I followed, and I couldn't find the join task request anywhere.
Thanks one more time.
Raul
P.S: sorry for taking 3 days to reply, I'm pretty busy this weeks because our user conference is on 29th & 30th October ^_^''