When is the Database List Usually Updated?

Hey guys,

First, I love Amibroker and have been a client for a while (even if I'm not the best at coding, I am learning slowly).

Not being critical, just trying to understand better, my question is this - I clicked on Tools > Update US Symbol List today and I still see symbols that are incorrect, such as ECA which it is now OVV (changed back in January).

How updated is the "Update"? As this example, if a ticker changes, how long should we expect before the database is updated too? If it makes a difference, I am using Tiingo for data.

Thanks so much!