With X3 and previously, as far back as PSP9, "AutoSave" referred to the following feature:
PSP9 wrote:"Paint Shop Pro can automatically save all open images on a set schedule. These autosaved files can help you recover your work if your computer crashes. When Paint Shop Pro starts after a crash, it will open any autosaved files it finds".
Now, with X4, "AutoSave" is changed to "Enable AutoSave in the Adjust workspace" or more fully:
X4 wrote:"Corel PaintShop Pro lets you automatically save your work as you move between tasks. For example, if you make some edits in the Adjust workspace, and switch to another photo or workspace, your changes will be applied automatically".
In both cases, as the help system explains "To find out where Corel PaintShop Pro saves the autosaved files, choose File Preferences File Locations and select the Undo/Temporary Files folder from the File Type list".
To avoid confusion, I am renaming the original AutoSave as "AutoRecovery". I found out where Corel PSP saves the AutoSaved files and the AutoRecovery files too. X4 still writes the AutoRecovery files but doesn't use them at all
When X4 starts, it firstly deletes all the old AutoRecovery files so that there is no possibility that "When Paint Shop Pro starts after a crash, it will open any autosaved [AutoRecovery] files it finds"
Please can Corel re-instate the old AutoSave system, under the nane AutoRecovery