# FNativeFastArrayReplication Fragment is missing HasFullPushBasedDirtiness trait

**URL:** <https://forums.unrealengine.com/t/fnativefastarrayreplication-fragment-is-missing-hasfullpushbaseddirtiness-trait/2707703>\
**Category:** Multiplayer & Networking\
**Tags:** unreal-engine, bug-report, question\
**Created:** [March 20, 2026, 2:45pm UTC](https://forums.unrealengine.com/t/fnativefastarrayreplication-fragment-is-missing-hasfullpushbaseddirtiness-trait/2707703 "2026-03-20T14:45:31Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![ArnaudCUbi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ArnaudCUbi](https://forums.unrealengine.com/u/ArnaudCUbi)\
**Post date:** [November 9, 2026, 9:16pm UTC](https://forums.unrealengine.com/t/fnativefastarrayreplication-fragment-is-missing-hasfullpushbaseddirtiness-trait/2707703/2 "2026-11-09T21:16:13Z")

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@blackrock0700 Hi, have you found a solution ?  
I’m having an issue with a MarkItemDirty call not having the expected effect in a FIrisFastArraySerializer and Claude is suggesting to add this exact block of code.  
Have you tested it ? Any response from Epic ?

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