I just wanted to post a follow-up in case anyone has a similar situation.
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I ended up storing the variables I need in local storage and redirecting to a blank page where I create the new item.
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The flow is as follows:
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New Plan -> Created -> Variables stored in Local Storage -> Link Page Loaded -> Variables Loaded from Local Storage -> New item created in link list
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I'm currently working on making the process smoother so that it will redirect/close the link list page and go back to where we started from.