Customer accounts are showing overdue amounts that are not overdue?

Hello sveeneman1-gmail, 

Welcome to the Community. Congrats on making the migration to QuickBooks Online. I'll be happy to help make sure you're on the right path so your account is reflecting the correct amounts. 

Depending on how you migrated your data, I encourage you to check out this article here that provides more info about: Converting Sage 50 data to QuickBooks Online. The article provides info about the limitations to expect when transferring your data. In case you're still having issues, I recommend contacting our support team so they can share your screen and help get to the bottom of this ASAP. 

• Schedule a Callback or start a Chat: click (?)Help in the upper right in QuickBooks Online > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
• Social Media: Facebook, Twitter, and Instagram.
• Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.

Feel free to keep me posted on how you make out. I'll be one message away in case you need anything else.