As you needed to complete forms when you left, you
will need to fill in forms when you return. The easiest
way is to contact the consulate where you are registered
to sort out your situation. You will have to establish
a fully detailed inventory of your furniture. A
moving
form attestation is often demanded when you pass
the border (you can ask for it at your Consulate).
You will have to think about school
registration if you have children.