How do I re-Load Fluid Sim Cache? I baked a fluid Simulation and it saved the fluid cache above the blend file in a folder called: fluid_cache. But when I closed blender and reopened the project, I had to re-bake the simulation. 

Is there a way to load the old cache files so I don't have to re-bake the simulation?
At least part of the answer to this question is: 

Make sure that the .blend file you are opening is located in the same folder with the fluid_cache folder.