Invoice line items generated on account plan upgrades/downgrades incorrect

I create an developer account with paid plan (Plan A) then changed it to free plan (Plan B).
A setup fee is listed, but the plan name is wrong.

Setup fee ('Plan B')

This is similar issue with THREESCALE-436, but 436 handled application plan. This ticket covers account plan.

The invoice is this:
https://tkonishi-rh-admin.3scale.net/finance/invoices/682182432

I've edited paidtest4 account like this:

1. Created an account that Account plan is paid plan (paid)
2. Created an application that application plan is (post) paid plan (paidapplicationplan)
3. Changed the account plan to a free plan (Default)
4. Changed the application plan to a free plan (plan1)

Result:
Fixed fee, Setup fee Refund of paidapplicationplan is listed to the invoice as expected.
However the "paid" ones are not listed here.

[1]
Fixed fee ('paidapplicationplan') May 13, 2019 ( 0:00) - May 31, 2019 (23:59) 1 USD 0.6100
Setup fee ('paidapplicationplan') USD 1.0000
Refund ('paidapplicationplan') May 13, 2019 ( 6:54) - May 31, 2019 (23:59) 1 USD -0.6000

So the current issues about account plan are:

• The plan name is wrong
• Fixed fee and Refund are not listed
• (suspected bug) Listing items delayed