Hello Eva,
Unfortunately the Cash advance design in Expense management. I have answered all your questions below:
1. Is it possible at all to offset a posted expense to a cash advance that is posted after the travel expense?
No - it is not possible. Settlement between Expense report and Cash advance is done automatically when expense report is posted. So support order is only Cash Advance and Expense report.
2. Is it possible to allocate a specific expense to a cash advance if cash advance is posted before the expense?
It is not possible. When expense report is posted, system locates a cash advance with balance and the remaining balance is used for Expense report settlement. This procedure ignores currency - expense in EUR can be settled to USD cash advance.
!!!ONLY!!! if the "Cash advance return" is used - then user can select Cash advance, but purpose of this category is to return cash advance money to company, not to settle Expense and Cash advance. I know that some users are confused about it. In this scenario
3. Is it possible to match 3 expenses to one cash advance?
Yes, it is possible. It depends on balance of Cash Advance. If you have Cash advance for 1000 USD, you can create 4 Expense reports with 250USD and system will settle those to Cash Advance.
4. Is there some kind of reconciliation report for cash advances?
Not at this moment.
If any tips for new information pages that would be highly appreciated.
The blog post you have mentioned is perfect for starting with Cash Advances. There's one point missing - which is also important. When you setup Payment method - you have to setup Expense owner as Employee, and Offset account type as Worker. Both are essential.
If you have any further questions let me know. If you want we can have a conference call and discuss there, but we would need Service request to our Microsoft support team.