Having Multiple Profile providers in the same APP.

Hello,

 I am trying to add profile information of a user of non-default profile provider. I am having difficulty doing that.

Here is the senario. I have an application(lets call it App A)  which creates users in another application. Lets call it B app. Now users in B app can have different profile properties than A. I have got to the point where I can save data to my app B provider,as long as the properties of A and B are the same, but the problem is if I intend to add an additional property in web.config. for B system expects it to have the same property for for site/provider A.

 

How do I resove this issue? I thought by specifying provider i could resolve my problem but i guess not.
<profile defaultProvider= ...