Moved this to the Game Save questions sub-forum. The section you posted in is for saves and save sets. Glad you got some help from Danilo, though. Some more advice I'd offer, if you're comfortable with it, is messing around with Advanced Mode although I'm not sure if it's enabled for HZD. You might be able to find your level within Advanced Mode and toggle it back to whatever you want. Just remember it will be in hexidecimal format. Link below to a decent, and more importantly easy to use, decimal/hexidecimal converter in case you haven't much worked with it. (Use the "swap" button to switch what's being converted to what.)
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So for you: 24 in decimal is 18 in hex, 49 is 31, etc. If you're currently at level 60, the value should be showing as 3C in Save Wizard and that's what you would want to change. The question is how easy that would be to spot in Advanced Mode. (And always back up your save first in case something goes wrong.)