Hi Harshad,
I was also going to do the same instead of creating a multi source universe and then using them, I would opt for two separate universes and then use them.
As far as merge dimensions are referred I already checked based on the dimensions and found it would be hardly a couple of them in my current report.
So that should not be a problem.
Again coming back to universe creation if I create separate ones it would be easier for me to reuse them for other reports as well separately as an when required.
Thanks for your reply Harshad.
Regards
Sandeep