I think I found something in the alpha of Bolt 2.
At first I had a Get Variable node set to Graph. Later I changed to Flow and the wireless connections broke ("Variable doesn't exist"). But it was set before in the flow.
Anyway, I deleted the node and put a new in (picture 1). When pulling the new connection from the Get Variable node to the (Missing) node, a new proxy node will be created next to the other one (picture 2). Pulling from the (Missing) node to the Get Variable nodeworks as expected (picture 3).
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