Config Transforms not occuring

Hi, I am wanting a deployment to automatically do the web transforms. This worked in the past but lately, it is not automatically transforming. The nugget package contains - Web.config, Web.Integration.config etc… When I deploy to the integration environment, it is not running the transformations. Is there a trigger I am missing? I know it was working before, so I feel I may have inadvertently turned it off. Thanks.