Project Budgetary control not working as expected for sponsored Projects

Summary:

We have enabled absolute budgetary control for sponsored project at top resource level and is working fine for all the resources included in the budget , however when we use a resource which is not included in the budget and create negative miscellaneous transactions, system is allowing the line though the resource is not part of the baselined budget for the same resource if we pass positive line, the system is stopping us. Any one has faced the same issue ?

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