想請教免面試資格的條件
背景：F1 visa仍有效，但因為轉換身份改用J1.
當時F1也使用投件申請，故嚴格來說並沒有真正"interviewed" for visa
關於投件服務，官方網站這麼寫的：
Were previously issued a nonimmigrant visa in any classification, unless the
only prior issued visa was a B visa; and
Are applying within 48 months of their most recent nonimmigrant visa’s
expiration date.
https://travel.state.gov/content/travel/en/News/visas-news/important-update-on-waivers-of-the-interview-requirement-for-certaing-nonimmigrant-visa-applicants.html
我的理解是，重點在"issued"而不是"interviewed" for visa,
但是在新的簽證預約申請，免面試的問券是問有沒有"interviewed" for visa.
想請問這種狀況能否再次使用投件服務？