For the Tiller Budget, You’ll need to add any missing periods manually to the Budgets History sheet. The Analyze Budgets History option will only bring in the current month.
If you’re away from your budget for a while and the script that normally creates new periods automatically fails you’ll have to manually add those periods. Running Analyze Budgets History re-initiates the script so come June it should be automatically created for you.
The steps for how to do that are under How to add a past period: