I downloaded the latest version of Aspose.Cells for .Net and have come across an issue. I was currently using v5.1.4 at this point everthing was working correctly. The issue that I am now experiencing is that the some custom functions in Excel that some cells are using are not getting updated after saving. I saw a similar issue with Excel's built in functions such as cell/range calculations. However, those were resolved when I used the CalculateFormula function in the Aspose.Cells.Workbook class. However, it did not update the custom functions.
Please give it a try with our hot fix version Aspose.Cells5.3.1.7. If the problem persists, then attach your source code and Input file (if any). We will look into it.
I tried version 5.3.1.7 and I got the same results as version 5.3.1. If I revert to version 5.3.0 all calculations within the workbook are updated whether they are build it or custom.