Please write your questions separately, so they are easily searchable in the future.
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GPS logging recorded tracks currently cannot be imported again in GPS logging.
I will have to see if this is possible. You can import them as overlays.
(see the discussion here) -
If it opens automatically Kurviger 1, you probably have set it in the past as default.
You can go to Android “Settings | Apps” and change it to ask again.
(see the discussion here)