I have upgraded Smartsuite Approach databases to MS Access before, but it is NOT just not a simple conversion.

Getting the data out is the first step, then importing into access and ensuring data integrity / formatting.

Then actually using the Smartsuite database to understand what it does and how it does it.

Followed by looking at and code and queries.

Then you have to re-create the forms/reports, queries and code in Access.

Given MS Access has made huge strides to current version, although it is a time consuming, and therefore costly, enterprise, it is well worth it.

Not forgetting that once in MS Access you have the option of putting backend on Azure server so multiple people can access from anywhere.