No person having a conveyance of or claiming a lien on the property or some part of it need be made a party to the action unless such conveyance or lien appear of record.
Mont. Code Ann. § 70-29-106
Unnecessary to join grantees or lienholders not of record
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.