There is no auto-Save in the online firefly version.

[greg.design]

I lost my perfect image i've been editing in firefly, just because my couse navigated one page back. that is just incredibly frustrating. id rather use offline tools in the future, which is stupid, because everything you do is in the cloud. so why not my firefly edits??

[Oh.N8]

Hey @greg.design 

This is frustrating 100%. In the future, you may want to take your image over to Adobe Express to make changes. 

In Adobe Express, the file is saved to the cloud as well.

In Adobe Express, there you can work on an image and the image is saved. You can make adjustments, add duo tones, and other edits. Besides that there are many templates, icons, animation features, and much more. 

Cheers
O. Nate