When I ex[port an SVG then bring it into my design software at sketch mode, the scale is not as i set it in Light burn
light burn scale set as 6" width 7" on length
import svg into alibre design expert in sketch mode the scale width .158 length .183
The ratio suggests LightBurn is using millimeters and the other design program is inches, perhaps with an additional factor depending on whether the SVG units import at 72 / 90 / 96 DPI.
Check Edit → Settings → Display & Units to see what LightBurn is configured to use.
If that’s not it, upload the *lbrn2 file so folks can experiment with it; I admit to not flying Alibre class.