Hi subuta,

in your case we usually suggest to make mono-item tables so that you can add/remove items one by one.
If the use of a single table for all the items is a necessity I confirm the only way is to unsubscribe from the entire table and then subscribe to a new one.

Please also take a look to the COMMAND mode that may fit your case better; Section 3.1 in the General Concepts.pdf file explains it.

HTH