How to update chart datas in offline mode?

[sunjar]

I am using MW Community Edition, and I am working in offline mode by importing external data (CSV file), so far everything is fine. But I want to know how to update my data without destroying the current chart (new data was generated everyday after the chart was imported last time). Because I have done a lot of marks on my chart, I don’t want to re-import to generate a new chart. Is there any way to solve this? Thank you.

 

[John999]

Seems, this bug remains unresolved. Monitor Input File for Changes, Datestamp does not recognise new updated data. Any solution, each time re-import is the only labourious dumb work, i am doing. Anyone having solution to this ?