There are several bug fixes and new code to support many-to-many.
During migration, the BaseApplicationPage.vb(cs), BaseApplicationTableControl.vb(cs), BaseApplicationRecordControl.vb(cs), and LargetListSelector.Control.vb(cs) in Shared folder are replaced with updated versions. In addition, Crypto.vb(cs) in Data Access Layer/Shared folder is replaced with an updated version.
After migration, re-apply any customizations you may have made to the original files.
Version 10.1.0 Application Migration