This is the 3733rd most frequent Japanese word.
さかのぼっ
The term "さかのぼっ" doesn't exist in standard Japanese. You might mean "さかのぼる," which means "to go back; to trace back; to ascend (a river)."
In this sentence, "さかのぼっ" is used to describe going back in time or reviewing past events.
昨日かれの発言をさかのぼって確認しました。
I reviewed his past statements from yesterday.
Here, "さかのぼっ" refers to moving upstream along a river's flow.
川をさかのぼって歩いたら美しい滝に出会った。
I walked upstream along the river and encountered a beautiful waterfall.
In this context, "さかのぼっ" indicates tracing back through information or documents.