If you have an external drive you should be able to time machine it and then you have a path backwards if things to truly sideways..  but I rarely have issues with my development stuff with OS upgrades on Macs, it's usually other stuff like corporate VPN software or attached devices.  I used to be the first to update, but nowadays I let other people be the canary.
		 
		
		
		
		
		
		
			
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				Uncertainty is an uncomfortable position.   
But certainty is an absurd one.
			 
		
		
		
		
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