At the moment I am developing a strategy for the Russell3000.

The history for each stock is stored under a single .t6 file, which makes data management quite complex.

Is there a way to split each historical .t6 file containing daily data into separate yearly files as it happens with M1-files.

Also everytime I want to download updated data for the last few days, the whole dataset of the stock is downloaded again.

Is there a way to just append the file as is the case with M1-data.

Thanks.