The labels in WaterGEMS/SewerGEMS/HAMMER for ArcMap are not being displayed after reloading a project file that was previously saved with labels.
1) Ensure that you have properly opened the hydraulic model from the Hydraulic Model Manager, which is available from the Bentley product's View menu.
2) Ensure that the fields being used for labels are present in the respective element's GeoTable.
3) Ensure "Auto Refresh" is checked under the Bentley product's menu > View
4) If the GeoTable contains the attributes and the label is displaying a different value than is being shown in the property try the following:
a) Browse to the folder the model files are saved in using Windows Explorer.
b) Locate the following files for WaterGEMS or HAMMER: <File Name.WTG> & <File Name>.MDB , and <File Name.WTG.SQLITE>. For SewerGEMS, the files are .SWG, .MDB, and .SWG.SQLITE. Locate the .MXD file and place that in the folder too.
c) Copy the files from step b and place them in a new folder. This isolates the model files from the output files. Open the files from the new location and try again