We are currently on QB Plus and want to upgrade to QB Advanced specifically for the BATCH INVOICING. function.

Welcome to the Community, Info. 

I appreciate you wanted to upgrade to a higher subscription with QuickBooks Online (QBO) for your business.

However, QuickBooks Advanced is not available in other regions. We currently don't have any timeline for when it will be available outside of the USA. 

Rest assured that our Product Development team is working nonstop to enhance our product and deliver the experience for all QuickBooks users. While this is unavailable, I recommend sending feedback directly to them. They will carefully consider this option and work towards meeting your business demands accordingly.

Here's how you can send feedback:

1. Click the Gear icon at the top, then Feedback.
2. Enter your comments or product suggestions.
3. Select Next to submit feedback.

You can trace requests for features through the QuickBooks Online Feature Requests website.

Furthermore, you can check available subscriptions offered in your area through this link https://quickbooks.intuit.com/choose-country/. 

Don’t hesitate to ask more questions if you have one about QBO Intuit subscriptions. I’ll be here to answer them at any time. Have a great day ahead!

@info-caredirect2 

You can use an importer tool as a workaround.

https://get.transactionpro.com/qbo