When you are working with D365 there are times when you are working on a form and looking at the data that you need to refresh what you are looking at. In AX2012 you could use the F5 key but now this is Shift+F5 in D365. Or you can click the refresh icon in the top right corner. As well browsers have a refresh button but this will perform a form re-load.
Here is a quick overview.
D365FO 1611Â Update 5 (7.0.4475.35138)