Invoice displayed wrong month

Hi Guys,

I'm not sure if this was a freak accident, just reporting it anyway.

I have automatic account creation on first invoice being paid (Dates are in DD/MM/YYYY). I have a client sign up and pay manually so i marked invoice paid. I didnt notice however that they were being charged pro-rata for a single month, but the invoice stated:

Package 1 - domain.co.za (20/10/2009 - 01/12/2009)

Did you see, it was billing to the 12 months, but the charge was till the end of November.

Then as per usual an invoice is generated:

Package 1 - domain.co.za (02/11/2009 - 01/12/2009)

So it appears to have skipped a month with the initial invoice, but kept the correct date in the system. Running V4.0.2 (Yes yes will upgrade when i get a chance.)

The original invoice was wrong as my client picked it up, so I couldn't have accidentally edited the month myself.

Its not a biggie as the invoice amount was still right. Just out of interest so any thoughts welcome .