Those ‘seals’ requested by Obama in a court of law as a private person will require another lawsuit to unseal. Obama did that in Illinois in order to get elected as a state senator.
EO’s however are NOT court ordered seals but simple actions taken by a president for ‘National’ reasons even though the president had ‘Personal’ reasons for ordering them. A new EO by a new president based on ‘National’ reasons will be able to override older EO’s.
I hope you wetre able to grasp one of those straws you were grasping for. zero did NOT seal his records via EO but by petitioning a court to have them sealed.
IMO, had zero been able to use the power of the EO to seal his records, it would have been yet another abuse of power (not that zerto cares.)
With respect to unsealing them, a lawsuit will not suffice. Again, as I noted previously, if there is information in those records that are material and pertinent to another court case, the judge can order them unsealed. However, that rarely happens and I don't anticipate any judge being willing to unseal zero's records on a whim.