Upon opening up two PCBs I designed about a month ago, I don't seem able to edit the existing traces/components. Only add new ones.  I have selected everything and clicked unlock, but am I missing something which would make the PCB design as read only?  On clicking on anything on it, everything turns grey.  Any help would really be appreciated. Would hate to have to do it from scratch to make a small change :) \*\* Edit\. Please ignore me\, it was all grouped\. Found this on a post two down: [https://docs.easyeda.com/en/Schematic/Wiring-Tools/index.html#Group-Ungroup](https://docs.easyeda.com/en/Schematic/Wiring-Tools/index.html#Group-Ungroup)