Charts changes appearance when changing values

[GrafikLVM]

I have a problem with Illustrator charts: For example, if I create a pie chart and reformat it "manually", i.e. change line thickness, line color or the font, it all looks fine then.

However, if I then change a value in the dataset and update the chart, it breaks my visual formatting. But not even logically. Some lines stay the way I formatted them, some go back to the way they were when I created the chart, or data points I had colored are now black again.

How can I solve this problem (which has existed for years)? Thx4Hlp.

Attached a Sample - Before and After.

[GrafikLVM]

[Monika Gause]

(which has existed for years)?

By @GrafikLVM

Through all these years people haven't found a solution.

Did you change the points using effects directly applied to the point? Or did you create your custom data point?

[GrafikLVM]

Not really "Effects". F.e. i simply click on all the same Lines, then select 0,5pt and Grey Color. Then i click on a Data Marker and select Blue Color. And another Green Color. But when i change a Value in the Table, its get broken back nearly to the Beginning. Frustrating. These Charts could be much more Powerful to work with...

[Monika Gause]

That could be saved as a custom graph marker and then it might stick better. Perhaps.

Also: you could try and save it as a graphic style. At least it will be easier re-applied.

[GrafikLVM]

How i can save custom graph marker / or style ?! 

[Monika Gause]

Please check out: https://creativepro.com/how-to-apply-custom-graph-marker-designs-in-illustrator/