Thank you for your answer. This is great software and it will make my life easier.

Hello
I am just starting with Qelectrotech. Anyone knows how Qelectrotech manages old projects and libraries? Currently I am using KiCAD and I fount out that if I don't copy old libraries or cache library separately of the project I am loosing symbols in schematics with new version of KiCAD. Is there any problem when switching to new version of Qelectrotech. I opened project with older version and warning appeared that symbols can fail to load. What is the right way to preserve project for future use?