Illustrator SVG export is duplicating items

[E_Inkster]

I am doing a save as ...svg from illustrator and when I open up the svg in Lightburn there are some items which are being duplicated on top of each other. I ungrouped the items in Illustrator and there are no duplicates there and if I then open the SV G back into illustrator the items are grouped and duplicated on top of themselves.  thoughts?

[Monika Gause]

Without seeing the actual file, nobody will be able to even guess.

[E_Inkster]

any thoughts on the attached .svg file ?

[E_Inkster]

here is the original .AI file and the SVG I created which then has the Railroads being duplicated & grouped together. 

[Monika Gause]

There's an SVG, but not an AI file

[E_Inkster]

it gave me an error (mismatched file type) for the .ai file when trying to upload, sorry first time using the support community here. 

[E_Inkster]

here is file as a pdf with AI editing

[E_Inkster]

also i was doing a Save As SVG, instead of Export AS , Export As seems to work right using Styling of Presentation Attributes, SVG, Embed and Layer names,  Decimal 3. minify/resposive checked. 

[E_Inkster]

sorry issue is still there. even when doing an export as