Version classes not built for models using package attribute

For models using the 'package' attribute in the schema definition, the version classes do not get created. However, the version table gets created.

There is no problem during the build, but when loading fixtures, there is a fatal error: Class TaxCodeVersion not found

TaxCode:
package: Masters
tableName: Fin_Tax_Codes
actAs:
Activateable: ~
SoftDelete: ~

1. Versionable:
2. tableName: fin_tax_codes_version
   1. versionColumn: version
3. className: %CLASS%Version
   1. auditLog: true
      Auditable: ~
      Timestampable: ~
      .......