Hi RazMAn,
Actually due to "Data limit to 100 matching metric" is causing you to export only random 100 metrics which is actually making difference each time you export.
What I could suggest is, you can bring this metric grouping data into "Report Template".
Using Template properties, you can -
1. Actually group or aggregate these metrics like 'per JVM\agent' OR 'per Metric Resource' etc
[To do that, open report template editor -> Add Metric DATA Table -> Select metric Grouping -> Under 'Display Properties' click 'Aggregate Data by Group' -> And take Group definition as per your requirement]
2. Taking details in Data table will allow you to fetch 6K metrics [whereas you were getting 100 matching metrics in graph of metric grouping]
So if your matching metrics are within limits of 6k, then you can use this functionality and export in CSV. Rest I think you can take care.
Hope it helps.
Regards,
Vaibhav