Modify template is changing the username

We host several hundred companies, but one of the companies usernames have no standardization. They have a HelpDesk Technician account in ADM+ that is set to only see their OU container.

I created a custom template to modify users however, when they go to Modify something like the phone number on a user account, it is changing their usernames to the one on the Template. I don't want the template to change it, I need it to leave the username the same obviously.

I tried making it silent and even tried deleting it but it still gets changed or I can't save the template.
.

There's got to be a way for ADM+ to only draw the data from Active Directory without changing it instead of drawing the first and last names and creating the username after the profile has already been created.

Thanks,

-Jeremy