Reassigning dimension references in family editor

I have a “grid” of reference lines that are supposed to flex, based on some variables, such as radius of central gridline as well as other dimensions. Due to Revit’s inability to handle more complex constraints, I ended up constraining x and y positions of reference line endpoints, which resulted in hundreds of x and y variables that are used as labels from dimensions that use a reference plane (see first image below).

Setting up one side of the “grid“ was quite a hassle so naturally I want to automate the second half, which I mirrored some distance away, including the reference planes the dimensions are anchored to. What I would like to do is reassociate all the dimensions from the newly mirrored reference plane back onto the old one. The desired result would be that the second half of the “grid“ is “sewn“ onto the original first half (see image below with dimensions hidden).

There are maybe 400+ dimensions that need to be reassociated. The associated parameters would stay the same. I only want to change the reference plane the dimensions are associated to. How would one be doing this and which nodes are necessary?