Yeah, what I said in the title really…
These are among the most popular night train routes on the continent, and not only is July peak season on a normal year, but 2022 will also be the first proper chance many people have had to travel abroad since the pandemic began. Accordingly there will be a lot of travellers planning to use these trains in July, and this track work couldn’t really have come at a worse time. :-(
I’m aware that quite a few of the more expert users of this forum will already have known about this, but hopefully anyone who didn’t - and was counting on these trains for their itinerary - will see this reminder and adjust their plans accordingly.
One possible alternative option for those who had been planning to come from Munich is the Trenitalia sleeper from Bozen, but this is on weekends only and only works for those travelling to Rome.