@ KENT
I also changed the variables HPBOUND, without success.
HPASSOC gives a sort , a part of solution, but is restraining other possibilities for manipulation afterwards .
With HPASSOC OFF ( = options not marked as "associative" ) the hatch is not keeping the bounderies together with the hatch ilself; I can change the bounderies and the hatch ( layer, color, .. ) via "properties " or via "match properties. Or erase them separatly.
BUT IS IMPOSSIBLE then to stretch the hatch. ( something I have to do frequently ).
With "associative hatch" = ON : then I can stretch borders+ hatch together, witch is OK! Hatch and bounderies stay in their "own" layer.
BUT THEN: erasing the hatch, erases the bounderies too, unless I deselect them separately. Changing ( layer, color ) can only be done for both hatch and bounderies together. I can no longer change the properties of the hatch because I can only select it together with his bounderies. Changing a hatch via the command "match properties" of another hatch changes de bounderies too.
Before my "hatch-problems", all above mentioned things were possible. ( for years ).
Handling old drawings , in witch I had no such problems , react now in the same bad way.
Thanks to you for posting me your hints.