Mother board replaced - Bitlocker key erased by Intune after first launch

Hello,

we have a worrying problem. We had to replace the motherboard of problematic computer. It was made by HP under warranty.

After received the device from HP, the computer asking for Bitlocker key. We entered the key visible in Intune but after several week another problem on this computer causing asking again the key but the key section in intune is empty now and i suppose Intune cleaned this section after seeing another serial number but at this point, what's the solution to recover the old one?

Thank you