SNAPHU Unwrapping question

Hi, everyone.
I have been working with images of Sentinel 1A IW SLC and I have done coresgistration, interferogram formation, deburst , topographic phase removal and phase filtering. Now i will do the step of phase unwrapping. Anyone can tell me which menu should i use firstly? SNAPHU IMPORT or SNAPHU EXPORT? If SNAPHU IMPORT menu, which product should i select for 1-Read-Phase and 2-Read-Unwrapped-Phase,respectively? Now I have 7 products in the left table of contents.


Please take a look at this topic

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Thanks. I have got a better understanding by following your recommendation.