Jille,
Yes.
Download the ADIF log from eQSL of all records:
-->
https://www.eqsl.cc/qslcard/OutBoxSelector.cfm and select link "Download log in ADIF format"
Then you can use TQSL to submit this log to LOTW:
--> Sign a log and upload it automatically to LOTW.
BUT... I would not do it directly like this (second step that is) as you may have errors and SWL entries. It is perhaps best to go through a third-party app to get things right first.
I would upload the eQSL ADIF log to a program such as DXLab's DXKEEPER (i.e.
http://dxlabsuite.com/ ). With the right configuration set for LOTW uploads you can then submit the entire log directly through DXKeeper to LOTW. See their instructions for getting this right.
73
Steve i
Vk3VM / VK3SIR
VK3VM Steve Ireland