s/w removes editing from parts inserted from toolbox

Hi everyone!

In order to make some assemblies i need, i inserted parts from the toolbox (right click on the part, create part) that i edited (holes, cuts etc). when I inserted them in the assembly, everything would look good, but when i closed and reopened it, the parts from the toolbox were there, but unedited. The weird thing is that when i open a window with the edited toolbox component and then the assembly, everything looks normal, but when i open only the assembly, the holes and cuts are missing.....

i include screenshots and the s/w files