SURSÖT ice tray: freezer-safe does not mean microwave-safe
IKEA SURSÖT 005.129.39 is explicitly freezer-safe. Its product page does not establish dishwasher or microwave compatibility.
An ice tray's freezer rating should not be taken as permission for every cleaning or heating method. The verified IKEA listing for SURSÖT 005.129.39 identifies thermoplastic elastomer and freezer-safe use. We cross-checked another official regional listing as the Korean page currently redirects.