restore restrictions apply to all operating systems / partitioning tools.
rooting modifies system partition, data partition, boot loader and recovery image, but there are packages that undo all of these changes. so in general you should not have to restore any partition manually, except if you try something like repartitioning...
btw - as you are from Spain - there is a very active spanish community around the prs-t1! if google doesn't point you to the website, ask j0534ng31:
https://www.mobileread.com/forums/member.php?u=149726