On our production site,the newly created child portals has its own user whose role is administrator and rest all roles are the roles assigned to its parent portal(except the administrator role of the parent portal).

We have created two child portals, say Portal 1 and Portal 2.

The administrator of Portal 1 has logged in to the Portal1 using the URL site1/Portal1, then the user  changes  the URL as site1/Portal2 without logging out from Portal1. By doing so, the profile gets added into the "Profile" table having the UserID as Portal1's administrator User ID and portalID  as Portal2.

Any idea, why this is happening?