Choose the reset that matches the intended result
If the goal is clearing viewing and listening history while retaining a programme list, read the account’s history control rather than beginning with full account deletion. Yle’s current Finnish instructions place the operation in personal details under your media consumption. Confirm the displayed account first, especially on a family television that may have been used by several people.
Know which lists will be cleared
Yle says this reset clears consumption history, Areena’s Jatka continue list and the Yle app’s recently read items. Those are connected consequences across its services. For example, clearing a confusing television continue row can also remove recent-reading history in the associated news app; it is broader than hiding one programme thumbnail on that television.
Keep the things the reset preserves distinct
The same instructions say own-list programmes, saved articles, comments and chat messages remain. A programme you deliberately saved can therefore still be listed after the reset without showing that the history operation failed. Conversely, the reset is not a documented method of removing a public comment. Do not treat a downloaded account-data export as the control for either of these tasks.
Allow for the published propagation delay
Yle warns that history removal across all services can take more than a day. Record when the reset was requested and compare the intended account after allowing that time, rather than immediately deleting the whole ID to force a visible change. This article concerns the all-history operation described in the Finnish help; it does not promise that every individual stored entry has its own deletion button.
Questions, answered
Does this history reset delete my own programme list?
Yle says own-list programmes and saved articles remain.
Does it remove comments and chat messages?
No. The cited instructions explicitly say they remain.