A duplicate, or copy of an entry in the regular course of business as defined in Rule 1001(5), is admissible to the same extent as an original unless: (1) a genuine question is raised as to the authenticity of the original; or (2) in the circumstances it would be unfair to admit the duplicate or copy of an entry in the regular course of business in lieu of the original; or (3) otherwise provided by statute.
Admissibility Of Duplicates, Copies Of Certain Entries
Mont. Code Ann. tit. 26, ch. 10, Rule 1003, under Article X. Contents of Writings, Recordings, and Photographs.
Mont. Code Ann. tit. 26, ch. 10, Rule 1003