How to connect models created during large projects

We are planning to conduct a photo survey project with a range of about 20KM^2 using about 3,000 photos.
If there is a way to divide the part of the model I want into a model editing program and combine it with a model that has no error with the existing model?

Hi yunsik79,

for model dividing you can use this workflow: https://www.youtube.com/watch?v=utvCIyQs44M&t=5s

Is it what you need?