withdrawing I90 & Naturalization application

[priceline 0]

There was a burglary at my home and all the vital documents were stolen. I applied for my Green Card (I90) replacement and my wife's Naturalization Certificate last week. Over the weekend someone called that they found my documents at the parking lot.

Now I have most of my documents. What I need to do now? I called USCIS office, she asked me to submit a letter to withdraw both the applications. She mentioned even the new cards will have the exact same information and same expiration date (GC).

1) I reported GC and Naturalization as stolen; Can I still use the old documents if i withdraw the case? The rep told me that they will issue the exact same copy (same A# and expiration date), so it should not be a problem.

2) I won't get my fees back (that is clear)

3) If I continue the new application processed, it may take 5-6 months and I need to go to finger prints once.

So, is it safe to withdraw the new application?

My son's passport is little different; He will get a brand new passport (with different# and different expiration); probably it is safe to continue the new application.

Any thoughts? TIA