I made an update with SW2004SP4. Now, when i open a previous version assembly, all the Toolbox components appears with a wrong configuration size (very big or very small) though the pattern is correct.
Seems that the saved files contains just the information about the class of the fitting (i.e.: screw ISO 4762) but not the others properties (thread diameter, lenght, etc.).
There is some tip to avoid this drawback? Thanks, Roby.