Software Deployment

I have build the dialogs for my Installshield Basic MSI project from scratch but I seem to be expericing some odd behaviour when I test them, I'm sure there will be more issues than just this one but the first I come across is on the customer info dialog which prompts for name, company name and email and passes them into public properties with appropriate names.  However when I fill in the customer name field and tab down, the dialog fills the customer name into the other two fields too.  I am using Indirect properties as in some cases the user settings will already be in the properties via a custom action which interrogates legacy ini files, help!

Okay, I've tried deleting the Edit boxes and recreating them and now the companyname one no longer populates from the username but the email one still does from what was typed into the companyname property.