A long process is in progress as I migrate my 19 year, 3000+ post blog to Substack. Alas, this is not easy.
As first, it seemed that I managed to import all of the posts, but the labels were not there. So the first step was hand editing each post to add the labels.
This can be done relatively quickly with a few cheats, I say relatively meaning that it will still take many days, work, but not many months.
In Blogger, I searched using the 'index:xxx' feature to find a subset of posts to work on. I used 'sort:-published index:0' at first, to start with the oldest post. I need to use the index feature because I can't simply scroll on. It seems that 3000 posts makes Blogger (or Chrome) break eventually.
In another tab, I made Substack to display posts, sorted from older. Then ctrl-clicked each of the 25-per-page posts to open each post in a new tab and edit. The list always defaults to search from newest to oldest, so you need to preserve these first two tabs: one from Blogger, one from Substack.
This, however would be relatively easy, taking a mere 2 or 3 days, except that I discovered that about 150 posts were not imported - agh! This seemed to occur at random, yet there were clues, such as posts with the same title/name were excluded (foolish me for making more than one post entitled 'Dream' or 'Monday', for example).
This complicates things. When finding a lost post, I had to make a list of the missing ones, then add them as new posts in Substack, one at a time. Then, open the post, edit, and set the new correct (old!) date. This was not easy either because the date entry field is broken and takes (no joke) 5 or 6 times of typing the same number -every time- to set the actual date and time. It would have helped enormously to be able to set the publication date when first posting.
Yet, it is possible. The process will probably take me 5 machine-like days of constant action, and all because of a buggy Substack importer. So much work stems from badly programmed systems by other people! What can we do but sigh and do our best to correct, and stoically continue in our task.
It was, it is, a delight re-read my older posts. I must remember to delight and inspire with each new post.
At time of writing, about 750 of the 3000 posts have been edited. Onwards we roll the heavy rock of art.