Hello, according to my understanding of your question you are trying to make changes in your new file and apply “push all” but those changes are being reciprocated in the library even after resolving the link.
Assuming you are using MATLAB R2018 version, to make the changes in the new file either you can create another library with and apply “push all” or you can use the “dissolve link” option. With dissolving the link option, whatever changes you make in the block and “push all” would not be reciprocated. The “resolve link” function does not break the link it temporarily disables it, but it is still linked.
Hope this helps
