I have found a handful of posts referencing my query. However there doesn’t seem to be enough information on the subject.
I am running Reallusion products on my MSI GE72MVR 7RG Apache Pro.
I have Character Creator and iClone installed on my C: (SSD 256Gb) and all of my content installed on my D: (HHD 1TB.
However I have just purchased a 1TB SSD (as external drive), which I was hoping to re-install both applications and content.

1. I have read that you can not install Reallusion product onto any other drive apart from C: (system drive) - is this true?
I do have enough space on C: for Reallusion products, so if it needs to be C: not the end of the world.
2. Is it cleaner to use the Reallusion hub to un-install and re-install?
3. Is it cleaner/safer to remove all content and download/install to the new drive? Rather than copying from HHD to SSD.

I am planning on re-installing UE onto the same external SSD, which I believe is possible from what I have read. I currently have UE installed on my HHD D: with the content and it is slowww.