Thanks, Darrell. Yes, I did have multiple Marketo windows open during all of these instances. I will try next time having only 1 email open at a time. I have been saving outside of Marketo - the one issue I have with that is that when I paste the revised code back into Marketo the Modules tab is grayed out and loses functionality. Since I am the only one who codes at my office I like the Modules tab to be functional so others can drag and drop as the need arises. We have several people here who work in Marketo, but we all have separate logins, so I didn't think that could be an issue. We have had issues with 2 people (unknowingly) working on the same email & information being lost between the 2 sets of updates, but we handled that awhile back. Thanks for your information, I'll give it a try.
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