Recurring proforma invoice

Recurring proforma invoice

Hello,
I'm a newbie to Zoho Invoice, and I'm really enthusiastic about it!
I'm considering to subscribe standard or professional plan, but... It would be essential for me if I could generate recurring proforma with specific automatic numbering, different from invoices.
I'm aware that there is no direct way to create a "Proforma Invoice" in Zoho Invoice, and as a workaround I can customize an estimate template, but when generating recurring invoices I can't select that template!!!

Any idea for me? Thanks a lot!!