Beginning with the 17.10 CUBASE Release (October 22, 2017 for online clients), CU*Answers implemented the CUFMAINT table, which includes data from the CUFMNT table, as well as additional data not included in CUFMNT.  CU*Answers recommends using the CUFMAINT table for all report building and query activity.  

If you currently have any Queries using the CUFMNT table, they will still work, as CUFMNT is now a View over the CUFMAINT table but without all of the additional information, so it will still work seamlessly with existing systems that rely on that older format.