The transfer of a thing transfers also all its incidents unless expressly excepted, but the transfer of an incident to a thing does not transfer the thing itself.
Mont. Code Ann. § 70-1-520, under Transfer of Property Grants and Their Interpretation.
Mont. Code Ann. § 70-1-520
The transfer of a thing transfers also all its incidents unless expressly excepted, but the transfer of an incident to a thing does not transfer the thing itself.