QCAD Professional
Win installer 32 bit
Version: 3.25.2.13 (3.25.2.13)
Internet: QCAD.org
Build Date: Feb 12 2021
Revision: cad2d36
Qt Version: 5.13.2
Architecture: i386
Compiler: Unknown

Andrew,
While enhancing DrawFromCSV: Forum Link.
I had a peek at the new command line tool: dwg2csv

//I would never come up with 115 columns.
That wouldn't be efficient to generate entities from.
Although this way it is very complete and one could use specific lists to filter.
One downside is that the '-list' switch return is far too vast for the windows command line.//

Remarked that:
Only the first alphabetically custom property is listed under:
QCAD:Line & QCAD:Reference (columns 114-115).
And that the last encountered is persistent for all entities that follows.

Maybe this originates from a multiple entity selection ...
... what also retains the last encountered custom properties in the property editor.
Should I add a seperate task for that?

Also had an exception thrown:
Debug: dropped global XDATA (no res buf): "ViewportCenter".
Discarted that as this very basic test drawing hasn't even a Viewport.

Regards,
CVH

Added: Snippet from DrawFromCSV code (merely a test case)

CSVcomma/semicolon
Offset;50;50
Point;39,789355;-0,815325;+[Custom;Reference:101];
Point;38,49526;4,014304;+[Custom;Reference:102;Line:56]

The two points, and only those two points, are casted with custom properties
QCAD|Reference|101
QCAD|Reference|102 & QCAD|Line|56

Added: The dxf file
Added: The csv file (change to the comma/semicolon style)

dwg2csv -t Point DrawCSVTest.dxf

Type,Handle,Block,Layer,Linetype,Linetype Scale,Lineweight,Color,Displayed Color,Draw Order,Position:X,Position:Y,Position:Z,QCAD:Line,QCAD:Reference 
Point,0x38,*Model_Space,0,Continuous,1,0.25,#000000,#000000,0,89.789355,49.184675,0,,101
Point,0x39,*Model_Space,0,Continuous,1,0.25,#000000,#000000,1,88.49526,54.014304,0,56,102