This fix relates to the importing of bank statements.

If there is an import rule being applied, and the transaction is an income transaction, the system may enter a tenant code against the transaction in the imported transaction list, even if the income is not a rent payment or extra charges payment amount.  In these cases a tenant is not required.

This issue was purely cosmetic because the transaction once imported had no impact on the tenants balance.  It just looked a bit strange on screen.  Now if a tenant is not required, the tenant selection combo box will be disabled.