Replace Ikea Pax Tonnes 3.00m new carcass?

Good day, I have the following problem. I have the wardrobe Pax Tonnes (3.00 x 2.36) divided into 4 carcasses (1.00 - 0.50 - 1.00 - 0.50) and with a 3.00 m sliding door, which has the flower/ash pattern. Unfortunately, the Pax back panel has started to mold and it has penetrated into the wood. (apartment problem!) My question now: Can I simply buy 4 new carcasses currently or replace them with the old ones? There are currently 0.50 width and 1.00 width carcasses available. I would rather not throw it away as bulky waste, since a move is upcoming. Treating mold is not an option for me! Only replacement of the carcass. Thank you very much for the answers

I wouldn't experiment with that either. You can simply replace the [Korpusse] with new ones.