Mont. Code Ann. § 37-7-609

Wholesale distributors, third-party logistics providers, manufacturers, and repackagers may keep records at a central location apart from the principal office of the wholesale distributor, third-party logistics provider, manufacturer, and repackager or the location where the drugs are stored and from where they are shipped, if the records are available for inspection within 2 working days of a request by the board. The records may be kept in any form permissible under federal law applicable to prescription drug recordkeeping.