Will Create Accounting spawn child processes if there are no accounting events?

I have a user that swears the following processes always run, even if there is nothing to process:

Accounting Program

Journal Import

Open Account Balances

TB Worker 1 (Open Account Balances Data Manager Worker Process)

Subledger Accounting Balances Update

However, when I run Create Accounting, I find the following in the Log:

Technical warning : There are no events to process.

Accounting Program did not find any events.

We had an issue earlier this morning where the ICM was hung.  I restarted the APPS tier without any luck, and there was a message next to the running managers about the target node queue unavailable.  I shut down the APPS tier, ran cmclean.sql over it, started back up the APPS tier, and still had the message.  Then I took it back down again, ran FND_CONC_CLONE.SETUP_CLEAN over it, ran AutoConfig on the DB, then on APPS, and re-ran cmclean.sql.  This resolved the issue and now the managers are functioning as expected...but I want to confirm the concern about Create Accounting.