[Rowebot]

2b should be no -- you know there is a build claiming the area, trees even if replanted are part of the landscape view. Best to ask the owner if you can harvest and replant. Like harvesting and replanting crops, trees take time to regrow; if the owner comes right after you replant to harvest or look at their favorite large oak which is now a small oak -- they are right to get upset.

2c is correct. Best check if someone has griefed fences letting the animals out before killing them. If you kill soon after they are released, staff will assume you are part of a team griefing.

3 and 4 are both report to staff and let them figure out who built first. Staff also have world edit tools to move builds.

5 is correct, claim owners can restrict who can go where in their claim.

6 is no. Your qualification changes my question. I meant if you find a locked building and break through the wall. Locked buildings are a restriction by the claim owner to keep everyone out of the building -- doors can have a list of people added who can use them (/cmodify). If you are mining and break into a built area -- then yes, stop immediately and replace what you broke -- if it is glass broken without silk touch, call staff to rollback the glass.

Thanks for you patience, you do understand the rules, you are unbanned. Do /rules and read them for more detail.