Yes.
If the ESN does not change, the validity period can be automatically extended when you apply for a new license.
If the ESN changes, you need to revoke the original license file on the device, and then send an email containing the revocation code, ESN, and new license file. If your information is correct, you will receive a reply email attached with a license file. Load the new license file on the device and check whether the validity period of the original license has been added to that of the new license file.