I never knew SPupgrade existed as Joomla was only promoting jUpgrade. Glad I stumbled on this component. I could do it myself and it worked without any issues. This is, in my view, the best migration component available.
Thank you for the awesome work.
Ninja RSS is really gooooddd :) If the product is good, the support is better. Seriously. I was facing this issue with multiple feeds on my website, despite disabling the default rss component. What Joomla forums couldn't do, Ninja forums did it for me.
Moreover they offered me a paid plugin free for testing purpose because it was related to the issue I brought out. Couldn't have asked for more.
They are really sincere and dedicated. While choosing products, you know you could go for one that has such good support for free!