Trying to open render-test.cgm in Draw imports the file to Impress. At least for files containing only single CGM picture it should be possible to open it in Draw.
Please attach a cgm file. Marking as NEEDINFO - once you add attachment set to UNCONFIRMED. Thanks!
I think the reporter is referring to attachment 105465 [details] from Bug 83272.
cgm is indeed registered as Impress type here: http://opengrok.libreoffice.org/xref/core/filter/source/config/fragments/filters/CGM___Computer_Graphics_Metafile.xcu#29
Created attachment 105669 [details]
render-test.cgm generated by Dia master
The issue still exists with 126.96.36.199 on Windows and according to comment #2 I doubt this is specific to this single file.
Win 7 64-bit Version: 188.8.131.52.alpha2+
Build ID: b021b5983c62e266b82d9f0c5c6d8d8900553827
TinderBox: Win-x86@39, Branch:master, Time: 2014-11-12_01:10:08
Ubuntu 14.10 64-bit Version: 184.108.40.206.alpha2+
Build ID: 5bff4b016c4b44f4123e0e6a4fd4c0c4dc0cfa2d
TinderBox: Linux-rpm_deb-x86_64@46-TDF-dbg, Branch:master, Time: 2014-11-13_00:14:29
Might be reasonable to adjust filter support for CGM images to include handling in the Draw component. Otherwise, NOTABUG because as in comment 2 Impress is the designated handler for CGM images--as implemented in OOo.
The issues of poor vector line style import filtering of bug 83272 remain.