so, writing some rules, to avoid any data lost it has to be configured as follow

* fetch in memory && fetch persistence => safe, everything is transfer from other nodes
* fetch in memory && !fetch persistence && shared cache loader && passivation => we need to fetch in memory since some entries are only in memory (in old nodes)
* !fetch in memory && !fetch persistence && shared cache loader && !passivation => all entries are in memory and in cache loader, no need any state transfer (in old nodes)

can you confirm this?