Thank you for your feedback. I have filed your request to restrict importing duplicate maps with our developers. If you would like to contact our support team directly, we can add your contact information to the ticket and you will be contacted if the feature gets implemented in a future release.
Referring to the problem you’re encountering with ‘Processing paused. Tap to restart”, this is usually an issue if you’re trying to bring your maps in via an iTunes Restore. Please contact our Support Team using the following link: http://help.avenzamaps.com/customer/portal/emails/new and we will work closely with you to resolve this issue.
Avenza Systems Inc.