Thanks for the reply. Wjat I meant is that some portion of the area might have been drawn with one source and some other with one other source and that it is important to be able to distinguish them. Foe instance, one part might have been mapped with and old imagery of Bing in 2016 and another with a newer LIDAR imagery of 2023. These imageries have different offsets, different otho correction and the landscape itself might have changed with the years. There is a lot of value -to me at least- in distinguishing the different segments as per their source. 