Did you have all upgrades added to the house? also what storage container did you use?
Im moving my crap out to be honest lol.
I used the chest of drawers. I fully upgraded the house but first I ordered the bedroom so i could put all the stuff i left lying around the house into.
I then put all the items in the drawers.
When I done that I completed the house and thats when i realized the items were gone.