Hello auctiontime4u -
you should be able to reach any custom templates you had saved prior to our updates to the templates after logging in to your account. From the Listings menu, select Manage from the Custom Templates area and you should locate your templates there.
In order to move them into the new system, you will need to then open the HTML of the custom template, copy it and then select Create New from the Listings Menu in the Custom templates area, open up the editor and past the HTML of your template into the new template and save. Once complete, you will than have access to apply the templates to your new listings or be able to modify them as needed.
If you run into further difficulty, please file a support case from under the Help tab of the site letting us know what you run into or where you are having trouble and we'll be happy to assist you further.