<< What is it that you are trying to do by having the dimensions separated?

Just to have total absolute complet control of anything! Number, Text, Arrows (part of them) etc...
Move, size, rotate, deformation (Flow) etc...more for design use than technical use...
(i can make yet all that with the Max Smirnov Dimensions but... ;)
Here just Move / Rotation the dimensions itselve for example


PS Your trick of Export / Import works also but some regulates must be done during the process! ;)
(unities, view...)


PS Seems there is something wrong somewhere : I don't success to re import in the same Size / View / Position
else dimensions, arrows and lines themselves are good! (except of course surfaces as you said above:)

https://moiscript.weebly.com/uploads/3/9/3/8/3938813/not_same.3dm