illustrator graph marker problem

[가희이75740510]

↑↑  i made line graph with using graph marker

↑↑↑ but if i change the data, the marker disappears.

I know I can set the marker again,

but I want the markers to stay even if I change the data.

Is there a way?

[Monika Gause]

Is there a way? Probably not.

That is a known issue. It's not even reliable. Sometimes it works as expected.