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Markups can’t be unflattened after editing page content.
If you intend to use these commands on a PDF with flattened markups, but want to unflatten the file later, unflatten all markups first before using one of these commands.
Once a form field is flattened, it cannot be unflattened under any circumstances.
When markups are flattened in Revu for Mac, there are certain commands that will prevent them from being unflattened. Learn more about them here.