Index changing property of field

Hello folks,
I’ve got an issue with my Elasticsearch environment. We have an index where we have a field called ‘metric’ whose field type was set to ‘float’ and ‘long’. We suddenly see that the field is also now showing a field type of ‘text’, with this recent change we’re unable to do count reporting off of that field since it is showing up as text.

What we have noticed is that our logging for this index has increased by 19,000%, what I’m wondering is if because of the volume increase that ES is defaulting the property of that field to be ‘text’ instead of the ‘float’ or ‘long’?

Our ES environment is configured as follows:
5 master nodes (t2.medium.elasticsearch instance types)
10 data nodes (m4.large.elasticsearch instance types)