Archive modifies address book but cannot be undone

[nus-se-script]

Problem

According to UG, undo only works for commands that modify address book. Archiving modifies address book but cannot be undone.

Steps to reproduce

1. Archive address book to a file.
2. Run command 'undo'

Expected behaviour

• The archive command is undone and list of all person is displayed.

Actual behavior

• Archive cannot be undone.

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_{[original: nus-cs2103-AY2425S1/pe-interim#3934] [original labels: severity.Medium type.FunctionalityBug]}