Low aerobic and walking activities

Hi,

I used to do lots of walking and those activities was added to low aerobic load. But now it seams to me that the low aerobic load stays on the same level, as if that is not counting in anymore.

For example, just finished 2,5km walk - aerobic 0.7, load 10 (and that is all ok).

On the training status, overall load number increased but all the loads (anaerobic, high aerobic and low aerobic) stays on the same level. Anaerobic and high aerobic must stays the same of course, but strange thing is that low aerobic stays the same as well.

 Please help, if those continues I'll soon be on the low aerobic shortage :)

Thanks!