[Lilux-info] Export functionality

We are victim of one of your customer: he provided us a project in your proprietary format. As we must respect some very basic safety rules, we need, for sure, the plans in a exploitable format, a format that is documented, that will be usable in the future, that will survive your proprietary software and your company. We tried to find the answer to this issue on the web, but it looks nobody (neither you) provides a "export" function or tool, to whatever open format. We looked in your "help" section, on your web site, but no answer has been found neither. Do you confirm your data format is designed as a "vendor lock-in" trap, or is there any way to recover the time and effort spent in using your software, by recovering the produced data in a readable format ? Thank you for your help.