https://forums.autodesk.com/t5/autocad-forum/force-update-of-associative-hatch/m-p/5867286#M307179 Some update on this : if I close the drawing with the either the layer containing the boundaries or the layer containing the hatches frozen, the problem stays, and I have a bunch of messages in the command when the drawing opens. Basically translated from French, either "Boundary entity on frozen or locked layer. Associative hatches not updated" or "Associative hatches on frozen or locked layer, no update".<BR />If I thaw all layers, close and save then reopen, the hatches are fine !<BR />So there is something that Autocad does when it first opens the drawing that solves the problem (i.e. it force-updates the hatches to follow the boundaries). I would really like to find a way to replicate this manually ! Is this possible ? Thanks ! Mon, 19 Oct 2015 09:23:10 GMT Anonymous 2015-10-19T09:23:10Z