SO I just went to get this cunning +3 datacron for my alt, & surprise surprise the landscape of the maps has been changed, a new rock pillar stands in the old jump location & the bldg that you used to jump upon its orange tent is now further away from the datacron, so even if you could get to the bldg you cannot make the jump. I do not recall seeing this change in the patch notes at all.
Here is the guide I followed to get to this datacron my first run through(no issues at all)
http://www.swtor-holo.net/swtor-datacron-locations/swtor-tatooine-datacron-locations.html
its Datacron 6 - Empire only.