Hi Elang, what happens if you use SVG or PDF file formats to do the transfer instead of DXF format, do those behave any better?

If not then can you please post an example file with some curves in it that you needed to correct? Then I can take a look at whether it's possible to make a script to process them automatically.

- Michael

Hi, Michael...

Thanks for your quick respond (as always)... you're amazing.

I will send to you immediately when I get the time to do.

Sincerely

Hi Michael.

Fortunately the problem is resolved this way:
1. I selected all curve with same color
2. Create a planar out of them (yes the curves are flat)
3. Deleted the curves (includes the ones suspected to have different direction)
4. Select the planar surface edges, and join them.

Upon exporting to CorelDraw there wasn't even one closed curve that has different direction from the other.