A few issues in NextGen UI

[PDalal]

When adding more items from the Available Expenses to an existing expense report, delegates find that the Concur system is randomly adding the business purpose which is a mandatory field for our company. This is a problem as a Fuel expense now has a business purpose "Tools" or "Test" or even "NextGen UI". The business purpose in existing line items in this report is also updated to incorrect ones.
Further, the newly added expenses have a completely different cost center from the report header. Sometimes the expenses originally added to the expense report have their cost structure updated to random ones.

Almost all our delegates are sometimes able to view all receipts, and sometimes not. When they log back in, they are able to view receipts now.
Has anyone experienced these or similar issues? How can we prevent the system from adding incorrect Business purpose or updating cost structure in the expense line items?
Please help
Pre Dalal

[KevinD]

@PDalal were there already expenses on the report when this group of additional expenses was added? 

[PDalal]

Yes Kevin, a few expenses were already entered in this expense report. When more charges were added by the delegates, random Business Purpose was added to the newly added expenses and Business Purpose for existing expenses were updated to incorrect Business purpose. The Cost structure in the previously added expense entries were updated to other cost objects.