Yes, that is possible. For this please contact the netatmo support who will be glad to help you. Describe the problem and include the IDs of the sensors in question. The developers of myatmo have no access to the raw data of your weather station - so in this case only netatmo can help directly.

Attention:

If the data of the old sensor is not displayed in myatmo after the data from an old sensor has been transferred to a new sensor, then the netatmo customer service must be made aware of this. The developers of the myatmo app have no insight into the infrastructure of the data delivery by the netatmo data server. If data is missing, it is essential to contact netatmo customer service and explain the problem in detail.