[flash] keep vector points in tact

Hi there,

the title may be conusing, but what i am trying to do in Flash is quite simple:

I work with vectors in flash quite much, and would like to keep the angles and sizes of vector lines in flash in tact. But after the shape is selected and moved around the stage, and i want to again adjust the vector information using subselection tool (flash control panel), the number of vector nodes and their size/direction changes, and it gives me headache to apply even the smallest change to the drawing again.

Btw it also adds on filesize to preserve more information about the shape at this point, and also exhausts more CPU when animated, so i dont know why is this happening at all.

Any suggestion how to disable this behaviour in Flash [any version] ?