移る and 移す: changing seats and transferring files
Compare people or activities moving elsewhere with transferring an object, and distinguish moving a file from copying one.
Someone changes places
日陰の席に移りました。 says that someone moved to a seat in the shade. に with 移る, read うつる, gives the new location.
来月、別の部署に移ります。 says that the speaker will transfer to another department next month. 移る also covers a change of placement within an organization.
The moved object and its new place
花瓶を窓の近くに移しました。 says that someone moved a vase near the window. 移す, read うつす, marks the vase moved with を.
写真のファイルを別のフォルダーに移してください。 asks someone to move photo files to another folder. 写真 identifies the files' content, while 移す describes their relocation.
Moving to a stage and copying
次の議題に移りましょう。 proposes moving on to the next agenda item. The discussion's focus moves, not someone's body.
In file operations, 移す refers to moving, while コピーする creates a copy. If the original should remain in its present folder, make the request explicit with コピーしてください.
Must 写す be used in 写真のファイルを移す because the noun concerns photos?
Show the answer and why
No. Moving the file's location uses 移す. Distinguish it from 写す for photographing or copying content.