Should weather insulation curves be set to internal?

[louispt1]

The following weather curves are set to internal true in ETSource:

weather/insulation_terraced_houses_high:
type: profile
internal: true
#display_group: households

weather/insulation_terraced_houses_medium:
type: profile
internal: true
# display_group: households

weather/insulation_terraced_houses_low:
type: profile
internal: true
# display_group: households

weather/insulation_apartments_high:
type: profile
internal: true
# display_group: households

weather/insulation_apartments_medium:
type: profile
internal: true
# display_group: households

weather/insulation_apartments_low:
type: profile
internal: true
# display_group: households

weather/insulation_semi_detached_houses_high:
type: profile
internal: true
# display_group: households

weather/insulation_semi_detached_houses_medium:
type: profile
internal: true
# display_group: households

weather/insulation_semi_detached_houses_low:
type: profile
internal: true
# display_group: households

weather/insulation_detached_houses_high:
type: profile
internal: true
# display_group: households

weather/insulation_detached_houses_medium:
type: profile
internal: true
# display_group: households

weather/insulation_detached_houses_low:
type: profile
internal: true
# display_group: households

This issue is to investigate why that's the case, and whether it should be the case. Some user want to set these curves, which they can to via the API - so why are these curves in a separated category?

See also this pyetm issue