If you need to move your litter tray from its regular spot to a new place in your home this can disturb you bunnies litter training habits and if your bunny can't easily find their way to their litter tray or doesn't like where it's been moved too they may continue to use the area where it was before or even try and establish a new toilet area of their own choosing. It's important to follow some simple steps to help this process along and the following guidance is from people that have done this and discovered all the pit falls to this delicate process.
When you first move the litter tray make sure you do everything you can to encourage it's use. An easy way to do this is to move your bunnies food next to it, If you have a hay feeder place this above the litter tray so you bunny spends more time there.
Leave some litter still in the tray when you clean it out so it retains a familiar small. This will help stop them starting a new spot as they will favor the one already used.
Totally remove any odor from the old spot by cleaning it thoroughly. If it was on a carpet its best to use an odor control spray. This will help break your bunnies association with this stop and make it easier to form a habit in the new spot.
If they do try and establish their own toilet area in a different place always quickly clean up any accidents and again being careful to remove any smells so this area so a habit does not form around it.
If your bunny does not take to using the litter tray in the new place you have situated it and instead starts an alternative spot in the room it may be easier to move the litter tray there if it's not inconvenient. Your bunny may have had a preference for a particular spot for some reason and you may be fighting this if you don't go with their choice.