[DerekM]

Vocaro-

Unfortunately no.. there's not really a way to prevent this. We will be getting rid of url attachments in the future to avoid this mess. One thing you can try doing is pasting into a cell and not having the paste make a new cell. This should give you a hyperlink instead of an attachment (however, even though the hyperlink works after you paste, once you save and reopen, it will just be plain text).

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Derek M.
Support Ninja
The Omni Group