numbers in text using wrong font--Futura PT

[Kelly AH]

I have placed text where the numbers pick up another font. This happens even if I copy/paste the text, and weirdly, it happens even when I'm in the text and I type a numeral. 

My typeface is Futura PT. All numerals in the paragraph get tagged differently, heavier. 

For example, if I tag the text as Futura PT Book (see first image), the numerals are tagged Heavy but don't display as Heavy. I can then apply the Book character to the numerals, but they that is seen as an override. 

I tried changing from Book to Light and the numbers show as Book but InDesign lists it as Heavy:

I have tried looking at the Open Type numbering options. That doesn't change. If I use a different type altogether, the problem resolves.  Obviously, the work around is to apply the correct character tag to all numbers, but that's a lot of manual work. Ideas? 

[Thunder-Lightning · Accepted solution]

Check the paragraph style applied has a GREP style that apply a character style to numbers. 

[Kelly AH]

I have no idea how/why GREP stuff snuck in there, but that was it! Thanks.