i have noticed the same thing with {B4001} IFR table.
i enter this, after reopening the file i have this

31.184631 / 31.188438
31.350477 / 31.374452
31.515451 / 31.498462
31.679566 / 31.684476
31.842834 / 31.870491
32.005270 / 31.994501
32.166886 / 32.180515
32.327694 / 32.304525
32.487705 / 32.490539
32.646933 / 32.676554
32.805388 / 32.800564
32.963081 / 32.986578
33.120023 / 33.110588
33.276225 / 33.296602
33.431697 / 33.420612
33.586449 / 33.606627
33.740492 / 33.730636