Direct answer
Custom nodes or rules disappear after profile update because remote subscriptions overwrite the managed profile. Put local customizations in supported override, mixin or parser features when the client provides them.
What to check first
A subscription URL is only a source for profile data. If the URL is expired, prompted, converted incorrectly, or overwritten by updates, the local client may look broken even when the client itself is working.
- Copy the raw subscription URL exactly from the provider dashboard.
- Update the remote profile and read the returned status or status message code.
- Check whether the node list, proxy groups and rules are actually present.
- Do not edit provider-managed profiles unless the client supports overrides.
Recommended handling
Keep the troubleshooting path narrow: confirm the profile, confirm the selected node, test Rule mode, read the log, then change only the setting that matches the observed status message.
Practical notes
- Change one setting at a time so the result is attributable.
- Use logs and timestamps when asking for provider or community support.
Changlian
When you need a subscription URL, renewal or provider change, open Changlian, copy the Clash/Mihomo URL from the dashboard, then import or update it in your client.