[stable2506] Backport #9451#9623
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EgorPopelyaev merged 1 commit intostable2506from Sep 2, 2025
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…e_upgrade (#9451) Recently, when moving the single block migrations from `frame_executive::Executive` to `SingleBlockMigrations` in `frame_system::Config`, I noticed that `try_runtime_upgrade` was ignoring the `SingleBlockMigrations` defined in frame_system. More context at polkadot-fellows/runtimes#844 Based on PR #1781 and [PRDoc](https://github.com/paritytech/polkadot-sdk/blob/beb9030b249cc078b3955232074a8495e7e0302a/prdoc/1.9.0/pr_1781.prdoc#L29), the new way for providing the single block migrations should be through `SingleBlockMigrations` in `frame_system::Config`. Providing them from `frame_executive::Executive` is still supported, but from what I understood is or will be deprecated. > `SingleBlockMigrations` this is the new way of configuring migrations that run in a single block. Previously they were defined as last generic argument of Executive. This shift is brings all central configuration about migrations closer into view of the developer (migrations that are configured in Executive will still work for now but is deprecated). ## Follow-up Changes Will try to open a pull request tomorrow for deprecating the use of `OnRuntimeUpgrade` in `frame_executive::Executive`. (cherry picked from commit 7753112)
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Backport #9451 into
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