Allocation is given on the Projects in the Allocation tab ( Res profile --> Allocation tab).
When user went back next day, its empty. Under Resource planning --> Allocation tab --> Weekly detail portlet we are able to see the allocation, for the same month (June, July).
Please ensure both datamart jobs are running successfully.
Datamart Extraction and Datamart Rollup.
Check on the TSV fields, if the same occurs with any time scale: weekly, monthly ....