Physical data per BMU has no MELS or MILS for Gwynt y Mor

[robhawkes]

Describe the issue

No MELS or MILS data is returned (at least) for Gwynt y Mor in 2016 (and possibly other years), even though this data exists in the older non-Insights BMRS system.

Steps to Reproduce

Steps to reproduce the behavior:

1. Request MELS and MILS data for Gwynt y Mor for 2016-07-01

   https://data.elexon.co.uk/bmrs/api/v1/balancing/physical?bmUnit=T_GYMR-15&from=2016-07-01T00%3A00Z&to=2016-07-02T00%3A00Z&dataset=MELS&dataset=MILS

2. Observe empty response

   {
   "metadata": {
   "datasets": [
     "MELS",
     "MILS"
   ]
   },
   "data": []
   }

Expected behaviour

MELS and MILS data should be returned for the given time period, as it does with the older BMRS system (see screenshots). The Insights API returns PN and QPN data for the same time period, just nothing for MELS and MILS.

Screenshots

If applicable, add screenshots to help explain your problem.

MELS and MILS data from older BMRS system

Checks

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• [x] I checked the documentation and found no answer
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• [x] I'm reporting the issue to the correct repository
• [x] I'm reporting a problem and not a feature request
• [x] I have added the correct labels
• [x] I have added screenshots or other relevant evidence (if applicable)

[Kim-Balmer]

I am investigating further at present I can confirm that MIL/MEL data from 12/09/2016 onwards is present within Insights.

[robhawkes]

Hi @Kim-Balmer, did you mean to close this? I've just checked and there's still missing historical data for Gwynt-y-Mor in Insights that's available in the legacy system.