Nothing in this act shall be construed to bar any action pending or that may be brought by any such county by which the county is attempting to recover from bondsmen, bonding companies or any other sources, any part of the money so lost by such counties. Amounts so recovered, if any, shall be placed in a sinking fund to be used to retire the principal and interest of such bonds, if bonds are issued in accordance herewith, and in the event a levy is made to restore such funds, then said sums so recovered shall be credited the same as moneys collected from said levies.