Import from old Ext Designer into "Architect" was successful.
Unfortunatelly Architect keeps erasing userAlias properties of my components, because it disallows "." in userAlias name.
There is nothing wrong in using a dot in aliases and I've been doing that for a year now. It's most commonly used in mid to large apps with different modules, where aliases would otherwise overlap (i.e. "users.Grid" != "products.Grid" alias).
Cancel that I was looking at userClassName which would refer to the above.
from the docs on Ext JS 4 - Using a dot in the alias other than the name will cause Ext.ComponentQuery.query to fail on that alias. For example alias: 'widget.sencha.coolpanel'. Using Ext.ComponentQuery.query('sencha.coolpanel') will not work. See http://www.sencha.com/forum/showthre...aining-./page3 for more details.