Here's the scenario:
multiple layers in a design > place embedded image > it's larger than the document > draw a marquis around just the area I want > invert the selection and delete > now later when moving layers around my document I discover that the delete function DID NOT delete anything outside of the document boundaries. so I end up with an image like what I've attached which is ridiculous I know.
Crop isn't available when there are multiple layers though.
I'm sure it's something I'm missing.
How should I handle this as a work flow? I run into this all the time.
draw a marquis around just the area I want > invert the selection and delete
Please clarify your steps. You mention both deleting and cropping — they are not the same.
When you make a selection first as you did, the Crop tool will recognize it. You can also make a selection and go to Image > Crop. Be sure to crop a copy of the image, otherwise there is no way to get it back.
Your aren't missing anything, it's just how PS works. I suggest you open your image instead of placing, select the part you want and drag and drop it into your other file.
Smart objects can't be cropped. You need to open the smart object and crop the original, then save and close it.
No direct pixel operations can be done on smart objects.
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I ended up finding the perfect solution! Using masking. Make the selection and then just click the mask on for the layer. Boom. Non-destructive and I can still move the image around and resize and everything.
Great tut from: https://www.bwillcreative.com/how-to-crop-a-layer-in-photoshop/