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Why are .dxf import sketch points broken?

Large amount of 2D drawing that I need to import into OS and sketch tooling for. Files are drawn in Lightburn laser software. The sketch points are not constrained where they meet. I drew a simple square in OS and exported as .dfx. I imported back into OS and the OS .dxf sketch points are also broken. There are hundreds on some drawings so selecting both points and constraining each union isn't going to work.
Am i importing/exporting something wrong?
I noticed that I can import my .dxf on Sketch 1 then open Sketch 2 and use USE to make an unbroken copy which would work but it is linked to Sketch 1 and I cannot make adjustments to it as its constrained by USE.
I tried importing an SVG but once in the parts studio (sketch/import img.) the .svg isnt showing up as an option. I though I might at least use it to trace over a new sketch then delete the .svg.
Is there a best practice so I can import constrained .dfx to the origin and work it into something 3D. Maybe there is a specific version of .dfx or a way to auto trace the .dfx then delete it?
Comments
imported geometry never assumes constraints. Arguably assuming certain constraints should be supported. I’ve not seen issues with dxf such as you describe. Can you share a link to your document?
Im not the OP but here is one of my files. I get "hatching not supported" but it should be off and not of my sections are connected when importing and I can extrude it once imported for some reason.
don’t see any files or links