It's difficult when going to work and doing work doesn't feel like work. When copying files and patching stuff together is what they expect you to do but that only requires a little bit of mental capacity, welcome to corporate reality.
What you choose to do is completely up to you, but know that a lot of people would give up their right arm and a leg for this kind of job and the job security that entails.
That said, as long as what you are doing is keeping you relevant in the job market and you are building competency you should be fine.
Don't worry. Go to job interviews when you can, this is to ensure that your knowledge and persona are still relevant. If they give you an offer you are in a good situation to use that information to either improve your current position or change job. Don't forget you work to live, don't live for work.
i would second this and also add, that when you're interviewing for other companies, be upfront and tell them that you're just not challenged. That you've been pidgeon-holed.
It will give the employer to guage if you will be a good fit for the project and that you are more interested in learning that just pushing buttons.
What you choose to do is completely up to you, but know that a lot of people would give up their right arm and a leg for this kind of job and the job security that entails.
That said, as long as what you are doing is keeping you relevant in the job market and you are building competency you should be fine.
Don't worry. Go to job interviews when you can, this is to ensure that your knowledge and persona are still relevant. If they give you an offer you are in a good situation to use that information to either improve your current position or change job. Don't forget you work to live, don't live for work.