Paths not closed after DXF import

Peer & I use same pattern making software. We both export to DXF and import into AI for clean up, adding branding, etc. When she imports, her paths are closed. When I import, they're no longer closed. We've walked through it together with the same DXF file. We've tried open and place file options. Hers comes in with each shape closed, mine come in broken at each node. Same DXF file, same latest AI creative suite cloud version. 

Am I missing a setting somewhere? It costs me a lot of extra hours fixing shapes. Even with Astute Graphics Vector First Aid, it doesn't close them all for me. 

TIA