I am using: Product CSV Import Export (BASIC)

I had a bunch of products (about 230) and I exported them so that I can add rows.

Once I added rows, i deleted all Post ID’s (because they were mixed) and started from 1000 and going down (I used to have about 230 products, I no whave about 330).

I uploaded them and I ended up with 172 products.

I tried uploading again, and I was getting “Post is not a product” – while staying with 172 products.

I then tried removing all Post ID’s and changed them to 70000 and down. This time i would get: Importing post ID conflicts with an existing post ID for some. Here are 2 lines of the answer:
250 70250 – HN3674 Import successful skipped
251 70251 – HN3674 1 Importing post ID conflicts with an existing post ID

If I check merge, but I uncheck ignore empty cells, it shows this:

250 70250 – HN3674 Merge successful skipped
251 70251 – HR1508R Post is not a product

I would always get this at the bottom of the import/export (a bunch of lines).
function (){return f&&(c&&!b&&(h=f.length-1,g.push(c)),function d(b){n.each(b,function(b,c){n.isFunction(c)?a.unique&&j.has(c)||f.push(c):c&&c.length&&”string”!==n.type(c)&&d(c)})}(arguments),c&&!b&&i()),this}

I can send my csv if needed, but it’s very confusing why this doesn’t work. Any help would be much appreciated!