There are times when a drawing set is requested in .dwg format and in V5 there are some things to be aware of to ensure the drawing looks the way it is intended. Below is a list of issues when saving V6 as a .dwg.
Text wrap translation is important to me and others, no doubt, who will be accessing their V5 archives from V6. To edit multi-line V5 text in V6 will require shuffling around with line breaks and back spaces or deleting all line breaks and introducing spaces to get back to a situation where you can use grips effectively - then the same again if the client wants V5 files from your V6 originals. Your call Lowell but I hope you consider text wrap translation.
V6 Round trip via .dwg issues (I don't have autocad so can't test how V6 files look when opened in Acad) :
A wrapped text string in V6 is converted to a single string (V5 text wrap to dwg works), so text wrap can't be used effectively when saving a dwg, a step backwards to line breaks and manual formatting of text seems necessary.
Radius and Diameter dimensions are flipped in .dwg round trip (V5 the same). This is pretty important as it can't be worked around.
Leaders see an increase in leader tail length of around 50% and lose their text justification.
Empty leader lines (with no text attached) don't get through to .dwg
In V5, text which has been underlined in Autocad, comes into V5 with %% prefix, don't know about V6 yet.
'NoPrint' print width is lost in .dwg and becomes default print width(same in V5)
Solid hatch is lost when saved as .dwg (same in V5).
Dims with dimension text adjusted by grips in Rhino is recentered in dwg. The new method of forcing text or text and arrows outside is working well though.
Text loses justification and anchor position on a round trip to .dwg, All text comes back Left justified, anchored top. (was working in V5)
Also groups are lost in Acad, which can lead to a mess at the Autocad end.
This is minor - If opening a new file after exiting an unsaved .dwg file, the drop-down list could be a bit longer to include .3dm without the need to scroll. (V5 the same)
Masked dimensions end up as a long winded name and uid.
Annotation Test V6.3dm (155.1 KB)
Annotation Test V6.dwg (24.8 KB)
The files uploaded here are an example V6 file with it's savedas dwg for comparison. Open the dwg to see some of the above points.
Try worksession the dwg into the V6 file above to see some problems with text being added to default layer at a reduced text height, instead of remaining with the attached file - also a crash occurs when the text is selected. Worksession the dwg is also a good way to spot the differences when the Worksession sublayers are selected.
Below screenshots show the display difference I'm getting, the heavier one is V6. Same file, same monitor, same default wireframe display. Curious to know if it's my system or a common occurrance. Not very happy with Dell monitors anyway, V5 display seems a bit wishy-washy with greyish blacks, so V6 looking better, but a touch heavy.