I want to mirror two MPC One

...and I do not know how exactly to do that.
I own 2 MPC One (non +) and for the purpose of a liveset, I´d like to have the two as exact copies of the storage space and configuration. To have a fall back option just in case a gig is comin and the machine starts to suck.
Due to not knowing better and my second one was bought used, naturally they differ in content and especially data/folder/structure. Things tend to be all over the place.
It is not difficult to bring both SD cards on that same level, but internal structure can become quite messy.
I am ready to wipe anything and install all extra content via servers, so they should become pretty much identical after that. Then I´d like to keep internal memory free of custom saves and use the cards instead - so it won´t be difficult to keep them on par.
So... is there a way to get back to zero and then build them up identical with all packs, softwaresynth etc.?

You can reach out to akai support for the restore files. Make sure you clarify you a have a One and a One +. They may have different restore files.

Or you can hack both units , which lets you access the internal storage. Ultros post about it all the time on here.

As long as the additional synths are properly activated on both MPCs, the projects themselves are portable and won’t be affected by the internal drive’s file structure. So if one unit starts acting up, you can simply insert the SD card into the other and continue working on your project.

Thank you so far, for the answers. I experienced problems in the past (without being able to understand why) that I could not load a project properly into the other machine with switching the SD cards. There were custom sounds for synth and drums and keymaps involved, that were stored on the card (or I thought so). In the machine where they were made, they could be accessed and found in the sounds menue (and when you open up the browser in the track) as "USER" sounds, but not on the other machine. Although I saved them specifically in a folder on the card.
I suspect the machine somehow laid out some kind of inventory structure on the internal disk, that could not be ported over to the other machine while inserting the SD card.
As far as I remember I had problems with a drumset as well. I saved it on the card, saved the whole project on the card as well, but when I loaded it into the second machine, the drums were not found.