Jeff, if all that needs to change are the x and y coordinates, then you can use the newest feature of the Parcel Fabric Quality Control add-in (Added in Revision 1.1), namely the Coordinate Inverse, that’s available from the context menu after right-clicking the fabric dataset in the Catalog window. (Parcel Fabric Quality Control: http://arcg.is/28ROQfd)
However, if you are projecting to a different unit (International feet to US Feet, for example), then since the line attributes are also not changed, there is no unit conversion applied on the attributed / COGO line lengths of the fabric line table. The distance inverse from the same add-in could be used to solve that problem, as well, but ONLY if the length data on the original source was itself originally inversed, otherwise you'd be overwriting the record data with the shape-lengths. For the Control points on the fabric, if you have any, then they will need to be exported to a standard point feature class, projected, and then re-imported to the target fabric; this would ensure that their geometry matches coordinates.
-Tim
... from the add-in's help doc:
Coordinate Inverse
The Parcel Fabric Quality Control Add-in also provides a method to inverse the attribute values for parcel fabric points from the stored geometry. The command is accessed by right-clicking the fabric dataset in the catalog window and clicking Coordinate Inverse. Coordinates should always match the geometry, the command will first check to see if there are any differences and update any points that have a coordinate inconsistency.