Error trying to edit v6 filters in v7

[jstewart_lsa (James Stewart)]

I upgraded everything from v6 to v7. My existing searches seem to work fine, but when I attempt to edit the filter through the UI (click on filter, then "Edit filter") a "Something went wrong" page pops up with the error below. I've tried clearing my session. Works fine if I create a new search. I've even looked at the filter in Saved Objects and looks identical to a new ones I create. Any advice?

Uncaught TypeError: Cannot read property 'label' of undefined (https://<redacted>/built_assets/dlls/vendors.bundle.dll.js:203)

Version: 7.0.0
Build: 23117
Error: Uncaught TypeError: Cannot read property 'label' of undefined (https://<redacted>/built_assets/dlls/vendors.bundle.dll.js:203)
at window.onerror (https://<redacted>/bundles/commons.bundle.js:3:1029989)

[jstewart_lsa (James Stewart)]

Somehow the "_references" for the filters was set to an invalid Index; I'm not sure how this happened. Exporting then doing find/replace on JSON and re-importing fixed it.

[gekkeharry13 (Jeffrey E)]

Hi James,

Can you ellaborate on this? Experiencing the same issue here.

[jstewart_lsa (James Stewart)]

I found this error also caused by invalid fields. I had switched from fluentd to filebeat and a few field names used in filters changed slightly. I had to export all of them and do find/replace until all fixed. Also checked all the index IDs. Reimported once fixed and eventually got it all working.