topic Re: Compare command turns overlay purple in AutoCAD Forum

AutoCAD 2022 - Compare command turns overlay purple

ericVD22D — Tue, 25 Oct 2022 22:16:52 GMT

I'm currently using ACAD 2022, previously I was using 2021, and a guy in my office uses 2020. When anyone in the office uses 2021 or newer we get this purple overlay when exporting the overlay. I don't have the option to go back to 2020 in my organization.

[ The subject line of this post has been edited to include the product name by @handjonathan ]

Re: Compare command turns overlay purple

ericVD22D — Fri, 14 Oct 2022 17:51:44 GMT

I should also add that it does not look like this before exporting it.

Re: Compare command turns overlay purple

pendean — Fri, 14 Oct 2022 18:00:45 GMT

Forgive me, but I think there is something missing from your post(s): are you just finding COMPARE command acting differently?
Or just the object colors are different in COMPARE?
Or are you in "XREF COMPARE" command in 2022 (not available in 2020)?

And what does "exporting the overlay" mean for those of us that cannot see your screen or the commands you are using?

TIA

Re: Compare command turns overlay purple

TheCADnoob — Fri, 14 Oct 2022 18:20:19 GMT

you can change the colors you want for "No Difference"

In the dwg compare menu go to the sprocket and see what colors you have set

Re: Compare command turns overlay purple

ericVD22D — Fri, 14 Oct 2022 21:05:25 GMT

I use the compare command, everything looks perfectly normal. The colors are separated into existing versus different in the drawings. When I export that comparison, the entire drawing turns to one color as you can see in the attached drawing. The comparison color scheme has completely changed and you cannot see what is different between the drawings.

Re: Compare command turns overlay purple

ericVD22D — Wed, 19 Oct 2022 13:50:46 GMT

You can only adjust the colors when you are creating the compared overlays. It changes colors once I have exported it and there is no option to adjust the colors at that point.

Re: Compare command turns overlay purple

pendean — Wed, 19 Oct 2022 14:23:03 GMT

@ericVD22D wrote:

You can only adjust the colors when you are creating the compared overlays. It changes colors once I have exported it and there is no option to adjust the colors at that point.

Open a support case with Autodesk if you are on subscription to seek out Autodesk Support's help: https://knowledge.autodesk.com/customer-service/account-management/users-software/support-options/web-support/submit-view-cases

Re: AutoCAD 2022 - Compare command turns overlay purple

karissa.rasmussen — Tue, 29 Nov 2022 18:53:52 GMT

I have the same issue. Feedback from Autodesk was that the issue was linked to a dimension object(s) in the drawing. Unfortunately I have dimension objects in every block because of dynamic feature so I have not found a viable solution.

Re: AutoCAD 2022 - Compare command turns overlay purple

cadffm — Tue, 29 Nov 2022 19:27:44 GMT

I like to see a sample (2x DWG), can you share one - is it possible?

Re: AutoCAD 2022 - Compare command turns overlay purple

rodrigo_teixeiraDQZJT — Tue, 11 Nov 2025 18:20:28 GMT

This thread is very old, but this is what the poster means, on the left is the active compare done on autocad 2024, the image on the right is after exporting the compare, you can see the grey lines became purple. I don't now any countermeasure as of today. Edit: It actually does keep it's colors after i open it in Autocad 2024, the image on the right is actually from the app "DWG Trueview", which is the one where the colors really change.