InfoPath Dev

I had a form with Requester Name Auto populated from the Active Directory (used UserProfile.asmx web service), the issue is once the form is submitted to a SharePoint library and another user opens the form the Requester Name is overwritten by the current user name. I tried to disable the field or make it read only but it did not work. Please help me Thanks in advance

 You should add a condition, such that the requester name is only autopopulated once (for example, when it is blank). It sounds like your data connection and/or your rule are executing with every form load, which is what it causing the issue.

Thanks @ErnestoM