Hello,
I definitely can customize this plugin, so it won't put moved field back after saving. But this is really custom job and could require from 2-3 days to a week. Need to carefully investigate the code and how these fields are stored in DB by ACF.
I think it must be done via another custom wp-plugin, written from scratch. So changes won't disappear after next ACF plugin update.
If you budjet is not limited by e.g. $100, then I can do this for you. Depends on how much it takes, my price for this job will be from 300 to 500 USD. If it's fine for you, then lets discuss this via chat.
Now shortly about me.
I'm 10+ years php/js/html/css programmer, including some experience in base design and strong knowledges in "psd to html". I created more than 50 wp-plugins and customized hundreds.. (if not thousands) I'm new enough at freelancer.com (about five months only), but already developed and customized more than thirty wp-plugins for clients from freelancer.com and it seems they were lucky that had hired me. You can check feedback in my profile -> "recent reviews" section.
So, if you are interested in my proposal, be free to contact me.
Thank you