If you're worried about your item limit during relocation, go to Housing -> Estate Settings -> Private Estate (or Free Company Estate) -> Storeroom Status. It will display the number of items placed/max, number of items stored/max and a green check mark if your total doesn't exceed relocation limits. If both indoor and outdoor furnishings have the green check mark but an attempt to relocate fails due to exceeding Storeroom limits, then you should open a bug report.

It shouldn't be possible to exceed limits unless you're relocating a large but someone had mentioned in another thread that items placed using the out of bounds glitch weren't included in items placed counts. If true, it's likely those out of bounds items would be counted during relocation attempts and could cause the player to exceed the storeroom limits when relocating a small or medium.