Modpack Version

4.5

Describe the issue

I have discovered a serious issue where I am using a server. While playing, we noticed that items stored in AE2 would inexplicably disappear. Zombies summoned from the Iron's Spells' n Spellbooks mod would get stuck and cannot be cleared with commands. The server backend would display [14:05:23] [Server thread/WAN] [minecraft/ServerEntity]: Fetching packet for removed entity SummonedZombie ['summioned Zombie '/651500, l='Server Level [world]', x=667.68, y=61.19, z=-1265.31, removed=DISCARDED]
[14:05:23] [Server thread/WARN] [minecraft/ServerEntity]: Fetching packet for removed entity SummonedZombie['Summoned Zombie'/651496, l='ServerLevel[world]', x=668.55, y=61.19, z=-1266.31, removed=DISCARDED]
[14:06:23] [Server thread/WARN] [minecraft/ServerEntity]: Fetching packet for removed entity SummonedZombie['Summoned Zombie'/651500, l='ServerLevel[world]', x=667.68, y=61.19, z=-1265.31, removed=DISCARDED]
[14:06:23] [Server thread/WARN] [minecraft/ServerEntity]: Fetching packet for removed entity SummonedZombie['Summoned Zombie'/651496, l='ServerLevel[world]', x=668.55, y=61.19, z=-1266.31, removed=DISCARDED] This type of log has both client and server versions of 4.5

Similar problems on the newest version of the build.
Yesterday upgraded the server and client to version 10-4.6 and I found over time that some of the items in AE2 began to disappear, I tried using the ME IO Port to transfer items to new cells, but items from them for some inexplicable reason just disappeared and eventually I lost 70% of the loot (not all the items disappeared)

Except that right before I noticed the problem I claimed chunks in FTB Chunks and assigned them a forced load

Today I found out something new!

1. Forced loading of chunks does not affect the ME system and the disappearance of items.

2. The ME system sort of "rolls back" in time, which causes some items to disappear and old ones to appear.

3. The rollback occurs about 2-3 minutes ago, but I haven't figured out how often yet.