N.M. Admin. Code § 19.2.7.34
Assignments must be accompanied by the filing fee as set forth in the schedule of fees and filed with the commissioner within one hundred (100) days after having been signed by the assignor as shown upon the face of the instrument and not from the date of acknowledgment. Those presented after expiration of that time shall not be approved unless it can be shown to the satisfaction of the commissioner that extreme hardship will result to one (1) or more of the parties and that no prejudice to the rights of the state of New Mexico will occur. An additional fee as set forth in the schedule of fees will be charged for each such assignment (or each group of assignments, if the same basic facts are involved) to cover expense of investigation and records search.
N.M. Admin. Code § 19.2.7.34