[Therion] shift for extended scraps

I used shift for scraps with projection map. No problems. I tried to use shift for scrap with projection extended. The result is: therion: error -- milada.th [65] -- shift is not allowed for scrap -- milada_ext_s8@milada Definition of map is as follows: map milada_ext.map -projection extended milada_ext_s7@milada #pritokova chodba break milada_ext_s8@milada [0 -10 m] below break ... Is there any workaround or did a mistake there? Thanks Martin s.