Hello there, SarahMBB.
Thank you for providing us with detailed information about the conversion process. I'm here to help share information about the report you need in QuickBooks Desktop for Mac.
Right now, the Balance Sheet by Class report is only available in QuickBooks Desktop Premier and Enterprise versions. Running the report in QuickBooks Desktop for Mac is not yet available at this time.
It would be a great suggestion to be able to run this report for your business. I recommend sending feedback straight to our product developers. I'm adding the link below for you to submit feedback:
https://intuit.uservoice.com/forums/9333-quickbooks-product-feedback/filters/my_feedback.
Please know I'm always available here whenever you have questions concerning the QuickBooks product. Wishing you all the best.