XDJ-XZ + 2 CDJs 3000X in Rekordbox Performance Mode

Hi,

I own a XDJ-XZ for almost five years, recently bought two CDJ-3000X to have them controlling the other two decks / channels that already exist on the XDJ-XZ

I ONLY use it in Rekordbox Performance Mode. (USB connected to my computer).
I already have two decks from the XDJ-XZ, these can be controlled by this all-in-one unit.
I bought two CDJ-3000X to control the two remaining decks / channels from the mixer (XDJ-XZ) AND REKORDBOX (Performance Mode only!
Current connections: 1xUSB from XDJ-XZ to computer, 2xUSB from CDJ-3000X to computer. Not sure if needed or not but I connected the ethernet cable from both the CDJs to the ethernet port of the corresponding channels on the XDJ-XZ. No ethernet to computer, as far as I know it's not needed for Performance Mode. RCA Line from CDJs to corresponding channels on the XDJ-XZ Line in.
I want both the CDJ-3000X to ALWAYS be Deck 1 and Deck 2 in Rekordbox Performance Mode. The two controllers / decks from the XDJ-XZ should ALWAYS be controlling the remaining Deck 3 and Deck 4.
The problem I'm facing in is the display window of the Rekordbox software in Performance Mode. I do not care about the display panel of the XDJ-XZ.
I want to work in Performance Mode AND two decks view in the software window.
This problem does not occur when I have the four decks displayed in the Rekordbox Performance Mode window. If I do have the four decks displayed, what I'm looking for happens: CDJs always on deck 1 and 2 and the XDJ-XZ decks on the remaining channels.
Changing from the four decks view to two decks view, the problem happens: the decks that are displayed are 3 and 4 (XDJ) and not what they should be, decks 1 and 2 from the CDJs.
Maybe this is related to the fact that the XDJ-XZ has the option to switch decks with the double shift key press? To be clear, I totally don't need the decks from the XDJ-XZ unit to change to control the other two decks. They must be ALWAYS the remaining decks, 3 and 4 as I said

Why does rekordbox Performance Mode display deck 3 and 4 instead of 1 and 2 when I change the view from four decks to two?

Thanks