## Description `CREATE ASSOCIATION` with parent and child entities in different modules sometimes hangs indefinitely. The issue is **intermittent** — isolated reproduction succeeds, but under concurrent/sequential test load it can hang. ## Reproduction ```sql CREATE ASSOCIATION Administration.TestCross FROM Administration.Entity1 TO AgentCore.Entity2 TYPE Reference OWNER Default; ``` - **Isolated:** Works correctly (tested 2/2 times) - **Under load (sequential test session):** Hung with timeout (observed during automated test execution of 95 entity tests) ## Environment - mxcli: v0.7.0-257-ga07e7e0 - Project: EnquiriesManagement (Mendix 11.8.0) - OS: macOS arm64 ## Classification **Flaky** — cannot reliably reproduce in isolation. May be triggered by accumulated state from prior write operations in the same session, or by file locking. ## Related - #386 (test case documentation — entity test 10.4)