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.