Gold crowns are very soft materials compared to metal-based crowns. It is a common problem with gold crowns. If you have bruxism it will happen sooner. It won't be a problem if dentist recemented. However, you have to be sure about your dental care.
It is very hard to place the composite on metal. However, you do not need any restoration on it. It won't cause any problems at this time, and furthermore, you do not need to change the crowns.