I got it to work, but I can't say for sure that is a true AAMA file type. The program that I tried this with is Formaris from Lectra, I think that it is the same as Modaris just specialized for furniture.
1. Construct your drawing in autocad obeying the layer designations as follows
CURRENT_LAYER=0
BOUNDARY_LINE=1 (Contour Line)
TURN_POINTS=2
CURVE_POINTS=3
NOTCHES=4
GRADE_REFERENCE_LINES=5
MIRROR_LINE=6
GRAIN_LINE=7
INTERNAL_LINES=8
STRIPE_REFERENCE_LINES=9
PLAID_REFERENCE_LINES=10
INTERNAL_CUT_OUTS=11
CUTTER_INSTRUCTIONS=12
FIRST_DRILL_HOLES=13
SEW_LINES=14
SECOND_DRILL_HOLES=15
TEXT=19
DEF_BLOCK_NOTCH=HBD_TAC
Rules to follow: Outline is a solid polyline, drill holes and notches are points
2. Save your drawing as .dxf r12
3. Open My computer, then C:Drive, Lectra, then files. Under files create a new folder named IMPORT. Under Import create another folder named for the pattern you just created.
4. Drag and drop your .dxf file into this new folder you just created along with the 2 .txt files that I've attached.
5.Open a new model in the modaris/formaris and name it whatever you like. Click File, IMPORT. You should see a list of file types....aama, astma, dxf...
6. Right click on the dxf one and click on NEW ALIAS. On the left side of the window that opens, type the name of the folder your pattern is in under inside the import folder. Then on the right side click the browse button that looks like three periods ...
7. This links the location, now just click on the dxf under the import window, which will expand it open to where you can see all your folders. Click the appropriate folder, which will expand and show all saved .dxf patterns within it. Choose the one you want to import and click okay.
Notes- Once you create the new alias for a new folder, you will not have to do that again, only if it is a newly created folder will you have to do this.
The .txt file I have attached named cnvparam, allows Lectra to read your drawings in inches. If you use millimeters, you don't need this.
Hope this helps you!