This is the 760th most frequent Finnish word.
muuttamaan
"Muuttamaan" means "to move" or "to change" (into a specific state or place).
In this sentence, 'muuttamassa' means 'moving (to live in another place)' and indicates an ongoing process of relocation.
Olen muuttamassa uuteen asuntoon huomenna.
I am moving to a new apartment tomorrow.
Here, 'muuttamaan' is the infinitive form, meaning 'to change,' used in the context of modifying something.
Hannu pyydettiin muuttamaan suunnitelmiaan.
Hannu was asked to change his plans.
In this case, 'muuttamaan' represents the infinitive form 'to alter,' used to describe the act of bringing change.