For good cause, the court may, before the estate is fully administered, order the release of the sureties of the fiduciary and require the fiduciary to furnish a new bond.

 The original sureties shall be liable for all breaches of the obligation of the bond up to the time of filing of the new bond and the approval thereof by the clerk, but not for acts and omissions of the fiduciary thereafter. The new bond shall bind the sureties thereon with respect to acts and omissions of the fiduciary from the time when the sureties on the original bond are no longer liable therefor.