Reverting a saved file to previous version

[jdrunner]

Hello,

I have worked on a dataset that I utilized a dilation function on and saved it. I now wish to go back to the undilated state, but simply undilating the features won't work since the structure features that were removed from dilation won't return.

Is there a way to find a previous version of the file? I am trying to avoid starting from the beginning of segmentation, since a lot of work was put into the dataset. Thank you.

Respectfully,
Jack Davis