GraphQL API: can't retrieve issues with no milestone assigned

I want to retrieve all issues for each milestone using the following query:
{
group(fullPath: “fullpath”) {
issues(milestoneTitle: “title”) {
count
nodes {
id
title
state
milestone {
title
}
}
}
}
}

I know with the REST API can be used None for milestoneTitle. I can’t find similar functionality for the GraphQL API.

Tried with:
{
group(fullPath: “fullpath”) {
issues(milestoneTitle: null) {
count
nodes {
id
title
state
milestone {
title
}
}
}
}
}

But I get the entire list of issues, as if I wouldn’t set the filter.

Does anybody know if this can be done in the first place?

Thanks :slight_smile: