Sheetrock mudding over existing painted textured surface?
The mud should adhere fine, though you'll get a lot of "cratering" (air bubbles) going over egg shell paint. Extra coats will be required. You will need to scrape and sand the area before you mud to get it as smooth as possible (knock off the high spots at least). Scrape far enough back that your drywall knife can ride on a (semi) smooth surface. Sand lightly between coats of mud, it will likely take 3 or 4 on the rough side. Blend the texture back in and paint the entire wall.
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