Change CRS
In a project A using Civil Extension, you can not change the CRS of an already etablished project. You will have to:
establish a new project B with correct CRS (both for Connect and Civil Extension)
download a workset of project A. Find out where it is located: Find the Location of a Workset
close workset A
download a workset of project B
use "import" to import workset A into B, by selecting the QuadriModel file located where the workset is located
after selecting the file, select the correct CRS conversion