QB Issue Resolution:

They moved to Transactions > Expenses > Print Checks (upper-corner).

Resolution for Issue 'How do I get to the Print Checks page in the new interface?' available: Yes (Solved).
Source: Intuit Community forum.

How do I get to the Print Checks page in the new interface?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Printing Checks
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Error Recovery for Printing Checks [Canada]
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