Corel Painter Essentials 6- saved my work but ALL of my layers got deleted???

im new to Corel Painter Essentials 6 with Wacom, I was working on a piece that had multiple layers, saved my worked and decided to be done for the night. when I opened the application the next day, all of my work was still there, but the layers had been deleted and everything was just on the canvas.

probably an easy solution I just can't seem to figure out how to save the layers im working on

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