TFA 30.3015 Manual Del Usuario página 60

Therefore user need to create a new file in the "Recording History
file" (see below figure), if he wants to place the additional data to a
separated new file. Then the newly imported data will be stored in this
new file.
Note: *This history file carries data only for the Data Recorder program and
can only be viewed with this program. If user need to use the data in other
program, for instant Microsoft Excel, he shall "export" the data in a Text file first
(See Exporting the data to PC below).
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Click this button to choose
the old data files or create a
new file. Then data can be
imported in old data files or
a new file.