Not all 3GE templates are cross-compatible in a way that they'll result in an automatic switch to the new editor. If the template you're copying from doesn't make this conversion, then you'd need to rebuild it in the new editor.
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There isn't really a way to avoid it as it's something occurring on Outlook clients across multiple ESPs, including us. It's something Outlook will need to resolve internally.
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Hello @SusanF603 ,
Are you aware of any common elements between the previously failed RSNOs and this one? Have you had previous success when scheduling your emails for RSNO within 24 hours of the original sendout?
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