In case a new or additional undertaking be filed, the sureties on the original undertaking not asking to be released and on the new or additional bond or undertaking shall be and continue liable for the official acts of such officer or person, jointly and severally, the same as if all were sureties on one and the same instrument. This shall not be deemed to provide retroactive liability on the new surety.
Mont. Code Ann. § 2-9-525
Liability of sureties when new bond is given
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.