Moving Rows From Different Data Frames

[scidam]

Body_Data_Frame.append(Row_To_Append) returns another data frame. So, you need to reassign the result:

Body_Data_Frame = Body_Data_Frame.append(Row_To_Append)

However, there is a note in official docs:

Iteratively appending rows to a DataFrame can be more computationally intensive than a single concatenate.

Thus, it would be more efficient to prepare a list/dictionary and concatenate it to the data frame in a single operation.