What does the cryptic crossword clue "Unlimited plums to take on again (2-6)" mean?

The definition is "again". The wordplay uses a deletion. REENGAGE (deletion) + (deletion) = REENGAGE The answer is REENGAGE.

Unlimited plums to take on again (2-6)

Guardian Cryptic #29528 | 18 Across | 2024-10-31 flower