Migrating items to the Central Marketplace
In preparation for the release of the remastered content update, in addition to the Central Marketplace, there are a couple recommended actions to take to avoid a lengthy item restoration process.
First and foremost;
It is crucial that you remove all your current listings on the old marketplace as they risk disappearing otherwise.
This is due to the differences of the two systems at hand. Even if they might appear similar on the surface they share little to none in common with each other, which makes setting up a proper system to automatically migrate old listings to the new marketplace incredibly difficult and time consuming.
To further elaborate, items in your storage, mounts, warehouse and inventory etc will not be affected by this update, only those listed on the old marketplace.