append

To hang or attach to, as by a string, so that the thing is suspended

a seal appended to a record

An inscription was appended to the column.

To add, as an accessory to the principal thing; to annex

notes appended to a book chapter

To write more data to the end of a pre-existing file, string, or other object.

An instance of writing more data to the end of an existing file.

After recursively sorting the two subsets, the situation is (11,28) 35 (45,50,62) and an append of the three pieces gives the final result.

Logging can be used to back out bad data, be it an overwrite of existing data or an append of new data.