It seems like section 1-tests and discovery, point 3 may be inaccurate now. It looks like you can edit v1 emails after turning on editor 2.0 without needing to attach a 2.0 template to it (Marketo documentation below). It will automatically switch to a v2 email, but the template will be the same (v1) and there should not be any code/content loss. Is this what Gregoire is referring to in the June 18th fix? Marketo Documentation: Turning On/Off Email Editor 2.0 - Marketo Docs - Product Docs When you create a new email, the Email Template Picker will display and you'll be able to choose from either a v1.0 or v2.0 email template. Email Editor 2.0 is backward compatible, so using a v1.0 email template is an option. Email Editor 2.0 can create and edit emails using v1.0 or v2.0 templates. Email Editor 1.0 will only be able to edit v1.0 emails or create new emails from v1.0 email templates. Whenever you create or edit an email with Email Editor 2.0 enabled, the resulting email will always be marked as v2.0 (even if you used a v1.0 email template). Point 3 Opening v1 emails in the v2 editor without upgrading the template : Once the new editor is enabled, it remains possible to create or edit a draft on a v1 email event if it's templates has not been upgraded to v2 . All the email drafts you create will be flagged as v2, even if the template is still v1 (a little weird). If you approve these drafts, the email is upgraded to v2 and the v1 is lost forever. This might have an impact if you want to preserve the capability to revert to v1 (see point 2 above). So, at least at the beginning and until you are fully comfortable, we strongly recommend that you clone them first. Once you are fully comfortable that all your v2 templates are fully operational, you will be able to edit the v1s. Thanks, Mike
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