Some of the maps I have created in ArcMap Online incorporated extra details such as lines. However some of the detail characteristics, such as the arrows on lines are not shown when the map is imported into Storymap. The line and basic format of the line appears but not the arrowheads. If I delete and reimport the same problem appears in the Storymap. This has only happened within the last month, prior to that all details used to be visible.