2D - Design » Exporting issues..

Hello!

I'm having an issue exporting my linework. After updating to v1.904, I opened a project I've been working on, but any new lines I create are showing up blue rather than black, and the blue lines won't export into a .dxf file, whereas the original black linework will. Any ideas as to where I stuffed up?

Any help will be apprecited.
I didn't find the right solution from the Internet.

References:
https://www.emachineshop.com/forum/viewtopic.php?t=1745
Digital content production service

Thank you