Gallaecio, the section tags must be generated by the translatewiki extension, because that's how it knows where to put the content when translators upload their input. Manually input tags are not understood. I'll remove them. When I mark it for translation they will be created again.
Similarly, if a section is edited the tags stay untouched. If a section is deleted the tag should be deleted with it. If a new section is added, no tag is added, but Translate adds one, the next sequential number, and knows where, among the other sections, it belongs.
Should I write this up on Translate_a_Page?