@HEengineering Looking through this file, you have the user origin and the internal origin sett the same. The problem lies in the original data to create the DTM. My guess is you imported the lifework and it came in at a distance from zero zero. You then created the DTM and moved the DTM to zero zero. Meanwhile the original data in the DTM still holds the original x,y location, thus when you create the snapshot it will appear at the original location of the data. You can fix this by double clicking the DTM and select recreate from source data. Here you can copy all line work and exit this window. Next paste (not paste in place) your data and line it up with the DTM you created and moved. Delete your DTM from before and recreate using the newly pasted line work. This will reposition your DTM (and better yet the source data) over your origin slowing the snapshot to be placed correctly.
As a note it would be better to GEO Ref from the beginning as this would set everything to its correct location eliminating this issue completely.
Hope this helps!