agilex7 ram back-annotation

The warning is caused by the inferred RAM instance name changing between compilations. Although the RTL is unchanged, Quartus may rename internal inferred RAM nodes such as data_rtl_0 to data_rtl_1, so the back-annotated .tcl from the previous compile no longer matches the new design database.

This causes:

• Warning (15706) because the old node path no longer exists
• Warning (171007) because Quartus relaxes the exact low-level RAM cell assignment to a broader legal EAB location

Recommended action:

• regenerate the back-annotated assignments from the exact compile you want to preserve
• remove db/ and incremental_db/ before recompiling
• avoid constraining the deepest auto-generated inferred RAM node names
• if stable RAM placement is required, use explicit RAM/IP instantiation or a more stable hierarchy for assignment targeting

So the main issue is not RTL change, but name instability of inferred RAM implementation nodes across compilations.

Keep all compile conditions identical

• Quartus version
• seed
• synthesis settings
• fitter settings
• revision/database state

You may also attached your design.qar files for us to investigate.