If an association ceases to be an association by reason of merger, consolidation, conversion, acquisition of assets, or a similar type of transaction, any unpaid assessment for the fiscal year ended June 30 in which the conversion, merger, or acquisition occurs shall be due and payable on or before the day preceding the date of the conversion, merger, or acquisition. Payment of the unpaid assessment under this section shall be a condition of approval of any transaction requiring the commissioner’s approval.