Where are the /tmp/konsole-xxxxx.history files?

[chiasa.men]

kmail -v
kmail2 5.15.2 (20.08.2)

Earlier the konsole history was saved in /tmp/konsole-xxxxx.history. These
files seem to be gone (update?). The history still exists, so where is it
stored if not in /tmp/konsole-xxxxx.history?