iGO programs support only 4 types of routes, they are specified in data.zip, and no 7, 8, etc..., unnecessary ones need to be removed from the skin so as not to be misleading. Accordingly, .hnr 4 files, as in releases from TT...
Spoiler: data.zip

ERouteSettings = {
PlanMethods = {
Fast = {
prio = 100,
text = m_i18n("Fast"),
value = L"FAST",
visible = 1
},
Easy = {
prio = 200,
text = m_i18n("Easy"),
value = L"SIMPLE",
visible = 1
},
Short = {
prio = 300,
text = m_i18n("Short"),
value = L"SHORT",
visible = 1
},
Eco = {
prio = 1000,
text = m_i18n("Economical"),
value = L"ECO",
visible = 1
}
}
}