It seems to me that taking "hidden status" into account when reloading parts is a new behaviour of Pro/E Wildfire.
It is strange since the documentation still says "The hidden status of items is session-dependent; it is not saved with the model"...
CGR is a Catia GRaphics file.
Solidworks can read some versions of these files, but not all.
For instance, it is not able to read *.CGR files produced by
CATIA v4 4D Navigator (and many Catia v5).
However, it is able to read files exported by himself !
It seems the cooperation between DS...
There is something similar to Catia V4 layer filters in V5. It can be found in "Tools / Visualization filters" menu.
Also you can use the "Properties" popup menu on an gemoetric entity such as a sketch and set a layer number in the lowest case of the "Graphic" sub...