Sometimes we receive files from users of Adobe Illustrator. Though usually easily opened, in some instances, they will not open or import into CorelDRAW, displaying a “corrupted” or “not importable” message. I have, on occasion, been able to change the AI extension to PDF with favorable results.
AI is actually PDF in disguise, and CDR is actually ZIP in disguise. If I receive a CDR file from a newer version than mine that I cannot open, sometimes changing the extension to ZIP allows it to open in my version. In either case, I highly recommend saving the original file to a different directory to avoid losing the original.
To change the extension: Right click on the file, and in the dialog that appears, choose Rename, then select only the extension after the dot and type the new extension.