docs: Update Collect Diagnostics instructions

src/support/collect-diagnostic.md

@@ -1,7 +1,38 @@
 # Collect Diagnostic
 
-The [zilla dump](/reference/config/zilla-cli.md#zilla-dump) command will capture all the internal events at the stream level for a detailed analysis of what zilla was doing.
+Collect the following diagnostic information after reproducing the issue you are observing, and collect the artefacts once the behavior occurs so that runtime data is still available.
 
-These logs are captured down to the nanosecond and are exported as a `.pcap` file to be used with [Wireshark](https://wiki.wireshark.org/SampleCaptures).
+## Capture the Engine Runtime Directory
 
-You can find instructions on how to view the capture in wireshark in the zilla dump [plugin install section](/reference/config/zilla-cli.md#i-install-plugin-directory).
+Zilla stores engine runtime state under the engine directory. By default: `/var/run/zilla`
+
+:::info
+However, this location may be different if the `zilla.engine.directory` parameter is set in `zilla.properties`. Please verify the correct directory before proceeding.
+:::
+
+Create a tar archive of the engine directory shortly after reproducing the issue:
+
+```bash
+tar cvf /tmp/zilla-archive.tar /var/run/zilla
+```
+
+If your engine directory is different, replace `/var/run/zilla` with the configured path.
+
+## Confirm Zilla Version
+
+Capture the exact Zilla version you are running:
+
+```bash
+zilla version -v
+```
+
+## Share with Support
+
+Send the following items to `support@aklivity.io`
+
+* `zilla-archive.tar`
+* Output of `zilla version -v`
+* Zilla configuration file `zilla.yaml`
+* A brief description of the issue and how to reproduce it.
+
+These artifacts provide the most relevant diagnostic information for stream-level and engine-level analysis and allow support to investigate efficiently.