The remedies herein provided are cumulative and, if 2 or more proceedings are pending to recover the amount due for taxes upon the same property for any year, neither proceeding shall be pleaded in bar or in suspension of other proceedings. However, when the full amount due for taxes upon the property for the year shall have been fully paid to the plaintiff in any proceeding, together with all costs in all proceedings then pending, the plaintiff shall enter upon the records thereof discontinuances thereof.