Whoops - don't appear to have that option in Draftsight!

The file are ones I have been sent or ones downloaded off places like thingiverse.
I have Draftsight into which I can always open the files, I will try saving as Autocad V13 from there and then re-importing into 2D Design.
Thanks.

Trying to import DXF files into 2D Design, some work, some do not!
Error message "unexpected data format. Invalid value".
Is there a particular format of DXF files that 2D Design prefers?

Thanks,

Chris.