Giving a false description in mergers in Sept order (15)

I believe the answer is:

misrepresenting

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'giving a false description' is the definition.
The answer and definition can be both to do with social activities as well as being present participle verbs.
Perhaps there's a link between them I don't understand?

'in mergers in sept order' is the wordplay.
'order' is an anagram indicator.
'in'+'mergers'+'in'+'sept'='inmergersinsept'
'inmergersinsept' is an anagram of 'MISREPRESENTING'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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