I never had any trouble obtaining complete positional data (or close to it) from FlightAware for flight LY1.
But since November 18th I have not found a single instance where FlightAware has complete positional data for this flight?
What happened on November 18th?
Has there been any change in your facility locations?
We aggregate multiple data sources to provide our flight tracking and we regularly add or remove data providers as we are able to negotiate contracts with them. There was indeed a non-trivial data provider removal around November 18. However, we are actively working to add more sources and even working to expand our own data collection network. You can read about our new effort here, and even volunteer to host hardware for us if you are in a suitable location: flightaware.com/adsb/
Additional data receivers are being added in the coming months that will incrementally improve ADS-B coverage throughout the world. There is no specific timeframe, since each receiver is being deployed independently as they are manufactured and as we are able to locate a person willing to host a receiver. It is not possible to reinstate the old data sources that were previously being utilized prior to that date, due to non-technical reasons.