chr	start	end	old_id
1	0	311712591	scaffold-ma1
2	0	230514895	scaffold-ma2
3	0	179897795	scaffold-ma3
4	0	103290660	scaffold-ma4
5	0	87326385	scaffold-ma5
6	0	69529918	scaffold-ma6
7	0	61662597	scaffold-ma7
8	0	113984505	scaffold-Z
9	0	22521304	scaffold-mi1
10	0	19978503	scaffold-mi2
11	0	16785922	scaffold-mi3
12	0	16736726	scaffold-mi4
13	0	13784773	scaffold-mi5
14	0	13760811	scaffold-mi6
15	0	12380205	scaffold-mi7
16	0	10971998	scaffold-mi8
17	0	6768058	scaffold-mi9
18	0	5372826	scaffold-mi10