Thanks for your posting and using Aspose.Cells.
We are not clear about your issues. Will you please explain it further? If there are multiple issues, then please create a separate thread for each of your issue.
In order to clarify your issue, you can also provide us sample excel files, sample code, screenshots or videos. Such things help us to understand your issue better and we are able to investigate, replicate and fix them easily. Thanks for your cooperation in this regard and have a good day.
Please note, we have checked Leak Suspects.docx
and it seems, you are facing some memory leakage issues. Could you please explain it further, how to replicate such issues? And how they are related to Data Connection lost issue as the title of this thread says? Besides, by Data Connection, do you mean Microsoft Excel Data Connections or Database Data Connections? Thank you.