“does a sub class roll up into a major class?”

For Actuals, yes. For Budgets, no. If you wanted this in the Parent Level, you Budget the Parent Level accordingly.

Resolution for 'class budgets issue: 'sub class budgets do not add to a major class' available: Yes.

The class budgets 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 class budgets issue yourself by looking for a resolution described in the article. If it is a complex class budgets issue or you are unable to solve the issue, you may contact us by clicking here or by using other class budgets support options.

For more information about resolving issues related to class budgets in Quickbooks/QBO or to get support for the issue 'sub class budgets do not add to a major class', click the link below: