Explain what you mean when you say your work is gone. Please describe your system, your operating system, your exact version of Lightroom, etc. The more details you can provide, the more likely it is that you will get some help.
I am on a PC Windows 10 using Adobe Lightroom Classic. MY routine is to important (today was 1600 images) then select put in quick collection. All while under Library. I then go to Develope and edit. More than half way through editing (and i hit save quick collection) I get an error message. Unfortunately it wouldnt let me continue. Lightrom went back to just my import stage 😞