Is it legal for the property to sign a transfer agreement with the previous property to enter the community service?

It is illegal for the property to enter the community service by signing a transfer agreement with the previous property. According to the property management regulations, during the prophase property service, the developer or prophase property company signed a transfer agreement with the company providing property services later and started to provide property services without the consent of the owner, which is an illegal act of changing electricity without the authorization of the owner.