As per title. Workouts for garmin can include absolute values both for pace and heart rate similar to absolute values for Watts in cycling activities. These are currently read in as %LTHR and % Pace respectively. The data range for the Heart Rates is wrong as , leading to for example 124-140% LTHR when the boundaries for that are actually 124-140 BPM. Similarly the import of absolute pace seems to convert to % Pace, which looks more reasonable, but when actually synched to the calendar and used for training the device (Fenix 7) does not show any boundaries, only reports the correct step duration. Uploading the .fit files directly to the watch works without problems with the expected behaviour.
Intervals.icu will convert absolute BPM values into %LTHR and speed (pace) into % of threshold pace. This conversion is done using the settings for the selected athlete. If you send me (david@intervals.icu) some examples of things not working I will have a look.