multi-domain issue solved but need long term solution

Hello,

Had an issue where by multi-domains were no longer working. You select a domain other than the main one and it simply does not work - no error message but no site created. This is done by the network admin.

My developer seems to have found a solution that works but I am wondering how long term this is and would like it looked at. Solution is below:

******************** solution *******************************************
In the file /wp-admin/network/admin.php we commented lines 21 and 22 to make it work.

Please note that this was default wordpress functionality that has been disabled. During a wordpress upgrade this change will be overwritten.
*********************** end ********************************************

Now the domain mapping does not work for the multi-domains sites. We are looking into this but if anyone has a solution please help.

Thanks