Considering this was first shared with Xero's admin team in 2013, and I myself asked about it two years ago, I'm inclined to think this feature will never see the light of day. The workaround: open your repeating transaction template, change the next invoice date to today, and save it. It will generate a draft invoice or actual invoice depending on your settings. Then go back to the repeating transaction template, and change the next invoice date to the desired date of the next month/period, and hit Save again. It adds a couple of clicks which amount to an extra step, but it works, at least. Good luck.
Considering this was first shared with Xero's admin team in 2013, and I myself asked about it two years ago, I'm inclined to think this feature will never see the light of day. The workaround: open your repeating transaction template, change the next invoice date to today, and save it. It will generate a draft invoice or actual invoice depending on your settings. Then go back to the repeating transaction template, and change the next invoice date to the desired date of the next month/period, and hit Save again. It adds a couple of clicks which amount to an extra step, but it works, at least. Good luck.