We at Mamut Support do not have any tool that automates a conversion process from MBS to MS Dynamics, nor do we have any T-SQL scripts that could create files ready for importing.
It is good if a 3rd party has experience with this and can help you out. If not, you may contact Mamut Support and specify the data and file formats you would need exported. We may then ask for a backup of your company database and export data for you. We would charge NOK 1300 per hour for this.
PS! I assume you are aware of the standard export possibilities in Mamut, like the Mamut Import/Export application and exporting various reports to files.