CircuitWorks CircuitWorks™ is available in SOLIDWORKS® Professional and SOLIDWORKS Premium. Contents Date Formats for IDX Communication You can specify an option to use the Greenwich Mean Time (GMT) date format for ProStep EDMD file sharing and communications. IDX File Collaboration on the 3DEXPERIENCE Platform CircuitWorks can communicate with ECAD designers through desktop collaboration where it writes .idx baseline or change files to a shared folder. CircuitWorks monitors the shared folder for incoming .idx change or response files from ECAD designers.