Photoshop Elements :: Unable To Convert Most Recent Catalog On Each Drive?

My PC has three drives

C for the programs, D for the photos and F for the backup photos

With the upgrade to Elements 12, C is nearly maxed out

Except for "C" there are multiple catalogs on each drive, C should have none
 
I do not see an ability to convert the most recent catalog on each drive?

When a catalog is converted - does it reside on the same drive as the catalog?

If a catalog ends up on the wrong drive, for example C - can I just move/drag it to another drive?

Your catalogs end up under something called "breeze data" and are very diffcult to find, why are they called this? 

This conversion appears to have placed the converted photographs in 'C", is that possible, since they were not there at the start?

When I tried a conversion earlier this evening, it only did the most recent photographs I had accessed, how do I ensure it gets them all?

Since it did a partial conversion, will the rest of the conversion land in the same catalogue or in a completely new one?

When a file is converted, and I return to the drive, how will the icon be changed so that I know it has been converted?
 
For the previous elements 10, can I just drag it from Drive C to D (that way I can still use it with the pictures I have not converted), and have it still operate or must it reside in a program files folder?

As I type this I wonder if I might not be better off with just leaving the photographs as they are on 10 and starting afresh on elements 12