If the Recurring Payments plugin has already created an invoice, but your member decides to upgrade using the renewals form instead of paying their invoice, a second invoice will be created.
The second invoice will get marked paid when the member completes their upgrade, but the first invoice will be left open. This may cause the Business to lapse, depending on the settings you have selected.
We’re working on a fix for this issue. In the meantime, when a member upgrades during membership renewal, you can manually mark both invoices paid.
NOTE: If you are using the WC Payments plugin, you’ll need to manually mark both orders paid rather than the invoices.
NOTE: You should be able to make this change without any trouble. However, it is always a good idea to make a full backup of your site before making any changes.